3. the molecular form of the weak acid does exist in solution. The equilibrium constants for the weaker . It has a pH value of 2.67 in 10 mM solution. This cookie is set by GDPR Cookie Consent plugin. form H+(aq) and NO2(aq). Strong Acids Strong Bases HCl (hydrochloric acid) HNO3 (nitric acid) HClO4 (perchloric acid) H2SO4 (sulfuric acid) NaOH (sodium hydroxide) KOH (potassium hydroxide) Ca(OH)2 (calcium hydroxide). In nitric acid nitrogen is in higher oxidation state i.e. HNO3 is a strong acid due to the extra oxygen, while H3PO4 is weak due to the higher electronegativity of N relative to P. After H3PO4 loses its aproton, it becomes H2PO4-, which has no resonance stabilization. completely dissociated in aqueous solution. Nitrogen dioxide is an acidic gas. Nitric acid (HNO3) is a strong acid. Weak Acids and Strong Acids The acid dissociation constants of a selection of acids is in the tables.In the table are listed pKa values. Acids and Bases - Calculating pH of a Strong Base, Chemistry Examples: Strong and Weak Electrolytes, Calculate Concentration of Ions in Solution, Weak Acid Definition and Examples in Chemistry, Ph.D., Biomedical Sciences, University of Tennessee at Knoxville, B.A., Physics and Mathematics, Hastings College. Their difference (and therefore their strength) is how readily they dissociate into ions in solution. Determine if it Nitrous acid is very weak and it is very unstable compound. [Quick overview], Is SeF4 Polar or Nonpolar? All oxides of nitrogen are very strong acids. We use cookies to ensure that we give you the best experience on our website. LiOH is a lithium hydroxide solution. Let it clarify by reaction. These cookies ensure basic functionalities and security features of the website, anonymously. Now let's know whether it is strong or weak acid. All rights reserved. Nitric acid is stronger than nitrous acid because the conjugate base of nitric acid is more stable than the conjugate base of nitrous acid. Inorganic Chemistry. Why does equilibrium favor the weaker acid? Nitrous acid (HNO2), a weak acid, is very unstable and exists only in aqueous solution. What job has the highest employment rate? Your email address will not be published. It mostly exists only in aqueous solutions. HNO3 (nitric acid) Yes. Physical Properties of Nitrous Acid - HNO 2 Chemical Properties of Nitrous Acid - HNO 2 It is strongly acidic, extremely volatile and rises in thick fumes; boils at a low temperature of 82 o C and the specific gravity is 1.45 In vapour state, nitrous acid remains unchanged by the action of heat. In an aqueous solution, a strong acid is completely ionized. Salts containing the anion H2PO4? Strong or Weak - Formic, Is HClO4 an acid or base or both? A strong acid is referred to as those acids which ionize 100% on dissolving in a solution means all moles of the compound dissociate completely into ions and liberates a large number of H+ in the final solution. Therefore, we can say HNO2 acts as a Bronsted Lowry acid in the above reaction. 9 What is the oxidation number of N in HNO3 and HNO2? At equilibrium, the concentrations of each of the species are as follows: a) Ka=7.1104; This is a weak acid because the acid is not completely dissociated in solution. Here is the equation: The weaker the weak acid the stronger it?s conj base. - Polarity of Nitrous oxide, HNO2 Lewis structure, molecular geometry, hybridization,, Is HClO3 a Strong Acid? Is nitrous acid a strong or weak acid? At equilibrium, the concentrations of each of the species are as follows: [HNO2]=0.68M [H+]=0.022M [NO2]=0.022M View Available Hint (s) Calculate the for . weak acid Now check HNO2 nature as per Arrhenius theory. Is HN O2 H N O 2 classified as a strong acid, weak acid, strong base, or weak base? Is HNO2 a strong acid, a weak acid, or a species with negligible Use to treat the cyanide poisoning is one of its important application. The reason is that sulfuric acid is highly corrosive, while acetic acid is not as active. HO 2 C 2 O 2 H - oxalic acid H 2 SO 3 - sulfurous acid HSO 4 - - hydrogen sulfate ion H 3 PO 4 - phosphoric acid HNO 2 - nitrous acid HF - hydrofluoric acid HCO 2 H - methanoic acid C 6 H 5 COOH - benzoic acid CH 3 COOH - acetic acid HCOOH - formic acid You can drink diluted acetic acid (the acid found in vinegar), yet drinking the same concentration of sulfuric acid would give you a chemical burn. its conjugate base, etc. The reaction of HCl and NaOH produces NaCl. Also,you can check the number of hydrogen ions before and after in solution to verify Arrhenius acid theory. Dr. Helmenstine holds a Ph.D. in biomedical sciences and is a science writer, educator, and consultant. We aim to make complex subjects, like chemistry, approachable and enjoyable for everyone. So, Is HNO2 an acid or base? It is used as medicine for various type of disease. Nitrous acid - Wikipedia Heres a list of the most widely used strong bases. Determine if it Acute cyanide exposure that causes death within seconds is rare. from this reaction it can be confirmed that HNO2 is Arrhenius acid. Because when it react with water it release proton and form hydronium ion. Oxidation state of central atom; it is said that the compound is acidic if the central atom is in higher oxidation state than the compound in which same central atom is in lower oxidation state for example salt of Fe3+ is more acidic than the salt of Fe2+. In dissociation reaction it is remained in equilibrium with dissociated ions. HNO2(aq) dissolves in aqueous solution to And acid is a substance that donates the proton to other compounds or releases H+ ions in a water solution. If you were familiar with the list of 7 strong acids, then youd know that HNO3 is a strong acid, and HNO2 is a weak acid. As on dissolving HNO3 in an aqueous solution, no hydrogen remains bound, all are dissociated and converted into H+ ions which means the concentration of hydrogen ions increased in the solution. You will want to ensure to find the right fit and price ranges. If you see any other acid or base than one of these strong ones it will be a weak acid or base (unless I specifically say otherwise in the problem). HNO2 is also called nitrous acid is in equilibrium with a proton and its conjugate base, NO2-. Clear All strong acid KOH weak acid HNO2 strong base CaCl2 weak base HNO3 soluble salt Ca(OH)2 insoluble salt HNO2 is a weak acid. Distinguishing Between Strong and Weak Acids, Strong and Weak Vs. Is HNO2 a strong acid? So, the HNO2 molecule, when dissolving in an aqueous solution it dissociates into H+ ions which later forms hydronium ion(H3O+). Due to its unstability it can be remain either in solution form or in gas form or in the form of nitrite salt. A strong acid is completely dissociated in water while a weak acid is in equilibrium with its conjugate base in water. All registered trademarks are the property of their respective owners. The main important is that the compound is acidic if it follows the one of the three broad concept of acid they are. Here in this reaction, HNO2donates the proton to H2O and formed NO2 conjugate base. Hence, the number of hydrogen ions in the final solution has a lower amount due to only partial dissociation of HNO2. Because every acid reacts with water. diploma? Because when it is dissolved in an aqueous solution, it completely dissociates into H+ and NO3- ions in the solution. Other uncategorized cookies are those that are being analyzed and have not been classified into a category as yet. You'll get a detailed solution from a subject matter expert that helps you learn core concepts. Exposure to skin can cause the deep burn and blister. It states that a compound is an acid when it donates an H+ ion or proton to another compound and itself forms the conjugate base. suzette malveaux partner; dumpling making class; joel diaz boxing gym location; shooting in belle vernon, pa; cara nak tengok astro arena live; porsche 911 whale tail for sale 0 $ 0.00; french hairstyles 2022; View Available Hint(s) Cookies collect information about your preferences and your devices and are used to make the site work as you expect it to, to understand how you interact with the site, and to show advertisements that are targeted to your interests. Weak acids and bases are lower in energy than strong acids and bases, and because equilibria favor the reaction side with the lowest-energy species, acid-base reactions will go to the side with the weakest acids and bases. So, NO3 electron has a greater volume to stabilize the charge than the NO2. Note there are exceptions. We reviewed their content and use your feedback to keep the quality high. Completely dissociates in aqueous solution. So lets move to the point to be focused. This cookie is set by GDPR Cookie Consent plugin. Nitrous acid, HNO2(aq), is a weak electrolyte. When a weak acid and a weak base are mixed, they come to an equilibrium state represented by the following equation: HA(aq) + B(aq) Answered: Each of the following pairs contains Conjugate Acid-Base Pairs, Strong and Weak Acids and Bases It signifies only that the acid contains an H+ ion that isn't present in the conjugate base. [Overview with pH of NaCl], Is ICl3 Polar or Nonpolar? Which of the following pairs consists of a weak acid and a strong base pKa=3.33, Nitrous acid and Water reaction produces ions, but there is Imagine that you want to prepare a pH = 3.15 buffer solution that contains the weak acid (HNO2) and its conjugate base (NO2-). difference between nitric acid and nitrous acid Nitric acid is a strong acid which dissociate completely in the water to H+ ions and NO3-. HCl is a strong acid because it dissociates almost completely. Save my name, email, and website in this browser for the next time I comment. 2022 TutorOcean. HNO2 is a weak acid. 5. Calcium hydroxide (Ca(OH)2) Strontium hydroxide (Sr(OH)2) *Barium hydroxide (Ba(OH)2). You will want to ensure to find the right fit and price ranges. An acid is something we know that donates the H+ ion or proton when it is dissolved in a solution. As we know that a acid which dissociate completely in aqueous solution is strong acid and the acid which dissociate partially in aqueous solution is weak acid. Because H2PO4? Its time to rewind this article on HNO2 acid or base with some highlighted or important points. Most of the cyanide exposure is unintentional. Order in the increasing order of acidity:HCl, H2SO4, HF, HCl, HI, HBr stands for Accredited Jewelry Professional, and the, Pie should be left at room temperature after baking because the cooling process usually takes 2-4 hours. Is HNO2 an acid or base? These weak acids dissociate less than 1% in solution forms. A passion for sharing knowledge and a love for chemistry and science drives the team behind the website. The tendency of this ion to dissociate is greater than its tendency to hydrolyse, that is, its Ka2, is larger than its Kb. The concept of a strong and weak acid is very important to distinguish between the strength of any acid. What are the uses of HNO2 in chemistry? Figure 16.6.5: pH paper indicates that a 0.1-M solution of NH 3 (left) is weakly basic. How much does it cost to replace hard drive with SSD? It is exist only in solution phase and gas phase and in the form of nitrite salt. Economics Times points out that 20-33% out of the 1.5 million jobless engineers in India are passing out every year to run the risk of not getting a job at all. Aweak acid is any acid that is not one of the seven strong (e.g. Is hno2 a weak acid? [Expert Review] Your email address will not be published. and more. Is HF (Hydrofluoric Acid) a Strong Acid or a Weak Acid? The weaker the weak acid the stronger its conj base. Definition of a weak acid. There is chance of being parent compound present in solution due to the recombination of dissociated ions. Functional cookies help to perform certain functionalities like sharing the content of the website on social media platforms, collect feedbacks, and other third-party features. The nitrous acid test is used to identify the primary, secondary and tertiary amines as aromatic primary amine react with nitrous acid to form diazonium salt. Computer science and information technology. At equilibrium, the Aweak acid is any acid that is not one of the seven strong (e.g. Is HI (Hydroiodic acid) a Strong or Weak Acid - YouTube It is not to be confused with nitric acid (HNO3) which is a There are only six or seven commonly strong acids. HNO2 is a weak acid. FePO3 - insoluble. Strontium hydroxide (Sr(OH)2) *Barium hydroxide (Ba(OH)2). It is the inorganic compound that act as both reducing as well as oxidising agent. The strong bases are listed at the bottom right of the table and get weaker as we move to the top of the table. Students will write the formula and determine if compound is a strong or weak electrolyte. Finance. Chemistry teachers sometimes prefer one topic over another, so take advantage of the tutor interview process to understand if they are a good fit. HNO2 is a weak acid. Nitrous acid is used very much in organic chemistry such as amine and HNO 2 reaction. If A2- is more stable than A1-, then HA2 is probably a stronger acid than HA1. Study with Quizlet and memorize flashcards containing terms like HCl, Is HCl a string or weak acid?, HBr. The only weak acid formed by the reaction between hydrogen and a halogen is hydrofluoric acid (HF). H3PO4, HNO2, H2SO3, HClO, HClO 2, HF,H2S, HC2H3O2, and so on). There are only six or seven commonly strong acids. In reaction wither nitrogen either can accept electron or lose electron. How many engineers are unemployed in the US? By contrast, a weak acid like acetic acid (CH3COOH) does not dissociate well in water ? Solution: HNO3 is a stronger acid than HNO2, because: In HNO3 there is three nitrogen to oxygen bonds whereas in HNO2 there is only one. This website uses cookies to improve your experience while you navigate through the website. Because it does not ionize 100% or only partially dissociates in an aqueous solution. Examples of ionization reactions include: Note the production of positively charged hydrogen ions and also the reaction arrow, which only points to the right. This organic compound is known to exist as a crystalline solid which is white in colour under standard conditions for temperature and pressure (often abbreviated to STP). The acidification is usually conducted at ice temperatures, and the HNO 2 is consumed in situ. Is HNO2 an Acid or Base? [Strong or weak] - Nitrous acid Yes, HNO3 is a stronger acid than HNO2, one reason is that HNO2 does not dissociate completely in an aqueous solution to liberate proton or H+ ions whereas HNO3 is nearly 100% ionized in an aqueous solution and completely dissociates into H+ and NO3 ions. are weakly acidic. KOH is a potassium hydroxide solution. Is h3o a strong or weak acid? Will hno2 and nano2 form a buffer? - gbmov.dixiesewing.com Also, the acid dissociation constant value(Ka) for HNO2is7.2 10-4which is way lower than recommended value for strong acid. Which is a strong base HCl or Cl? HNO2 a strong or weak acid. HNO2 is considered an acid. Calcium hydroxide (Ca(OH)2). Here is a partial list, ordered from strongest to weakest. Similarly, a acid is strong if its dissociation constant is greater than 1(ka>>1) and the acid is weak if its dissociation constant is less than 1 (ka<<1). Is NO2 a weak conjugate base? Strong acids have high Ka or small pKa values, weak acids have very small Ka values or large pKa values. Examples of strong acids:- HClO4, HNO3, H2SO4, HI, etc. The acid dissociation constant (Ka) is a quantitative measure of the strength of an acid in solution. The 7 common strong acids are: HCl, HBr, HI, HNO3, HClO3, HClO4 and H2SO4 (1st proton only). As shown in the figure, when HNO2 is dissolved in water, it dissociates into two ions (NO2 and H+) but the ion(NO2) is not stable, it wants to combine with H+ and make HNO2again. As it is illustrates that strong acid has higher ka value than one. It only exists in solution and is very unstable in nature. maximum +5 so it is strong oxidising agent and in HNO2 the oxidation number is +3 which is less number than in HNO3. It is because it doesnt dissociate completely in water. Nitrous acid is unstable so its existence is only in either in solution or in vapour phase. Sulfuric acid is a very strong acid; in aqueous solutions it ionizes completely to form hydronium ions (H3O+) and hydrogen sulfate ions (HSO4?). [HNO2]=0.68M [H+]=0.022M [NO2]=0.022M Calculate the for the following acid. We have two titrations with a strong base in this problem, one with monoprotic acid and one with diprotic acid. When you mix a strong acid with water (H2O), it will completely dissociate into ionic form - H+ and an anion. Table of Acid and Base Strength - University of Washington It releases H+ (hydrogen-ion) in water. It is used with amine to prepare diazonium salt. So, nitrogen is in higher oxidation state in nitric acid than in nitrous acid hence, becomes stronger acid. Nitrous acid is a monoprotic acid with the chemical formula HNO2. For example triprotic acid H, Polarity of H-A bond. If the bond is more polar electronegativity difference is increased and bond electron is more attracted by more electronegative atom which make easy to dissociate H+ ion. It is very unstable. The oxidation state of nitrogen in HNO2 is +3. 4HNO2 2HNO3+ N2O + H2O. Brnsted-Lowry acids and bases (article) | Khan Academy However, depending on the lesson, including organic chemistry, inorganic chemistry, chemical reactions, quantum mechanics, inorganic compounds, atomic structure, organic reactions, etc., many teachers are willing to provide safe sessions in person if they are located nearby. Because the acidity is directly proportional to the H+ ion concentration, the less number of H+ ion concentration of nitrous acid solution make it weaker acid than nitric acid. Hydroflouric acids base is F. HNO3 is a stronger acid than HClO3, and the primary reason is that N is more electronegative than Cl, which improves electron density. Such type of compound which has one replaceable hydrogen is called monoprotic or monobasic acid. 1. So, HNO2 is weak acid. If you continue to use this site we will assume that you are happy with it. For example, HF dissociates into the H+ and F- ions in water, but some HF remains in solution, so it is not a strong acid. What is HNO2 commonly used for? nitric acid. 3.1K views 2 years ago There are two ways to determine whether HI is a strong or weak acid. What are the 4 major sources of law in Zimbabwe. It remain in equilibrium with dissociated ion in solution. So, not all the HNO2molecules dissociate, most of them stay together and only a few of them dissociate and liberate H+ ions. HNO2, also known as nitrous acid, is used with other substances to treat cyanide poisoning. Concentrated and Dilute. In this article, we will discuss Is HNO2 an acid or base, Is it strong or weak? Required fields are marked *. Hydrofluoric acid, while a weak acid, would pass through your hand and attack your bones. What did you understand by looking at data of jobless engineers in India? But HNO, , also known as nitrous acid, is used with other substances to treat cyanide poisoning. 1. All of the reactant (acid) is ionized into product. HNO2(aq) dissolves in aqueous solution to Ka=7.1104; This is a weak acid because the acid is not Ka=1405; This is a strong acid because the Ka is very In summary: the stronger the acid the more free H+ ions are released into solution. Arrhenius theory of acid; according to this theory acid is a compound which releases the H+ ion in aqueous solution. What is the unemployment rate for engineers? Only about 1% of ethanoic acid converts to ions, while the remainder is ethanoic acid. Rubidium hydroxide, RbOH. of more than 1.5 million engineers who graduate each year 80% are unemployed and close to 45% can be made employable with the right intervention. You MUST know these. Clear All strong acid NaOH weak acid CH3COOH strong base NH3 weak base H2CO3 soluble salt NaC104 insoluble salt. While technically a weak acid, hydrofluoric acid is. Acetic acid (HC2H302) and HCN are both weak acids. What Are Strong Acids in Chemistry? - ThoughtCo Theories to check whether HNO2 is an acid or base. Strong acid molecules break up in a solution if said in an even easier way. What volume does a balloon filled with helium need to have in order to lift a 100kg man? Is hydrochloric acid a strong acid? Explained by Sharing Culture [Quick overview], Is SbCl5 Polar or Nonpolar? Is HNO3 strong acid or weak acid? - Wise-Answers As a result, the H, which is attached to an outer O, loses more of it, weakening the OHbond. HNO3 is stronger acid than HNO2 . The first it to memorize the seven common strong acids. Therefore, NO3 is more stable than NO2. HNO3 is stronger acid than HNO2. This study is about whether the HNO. How do you find the pH of a strong acid and strong base? This cookie is set by GDPR Cookie Consent plugin. But HNO2 is a weak acid and HNO3 is the strong one. HX dissociates as HX=> H- X- as an acid. Here is a partial list, ordered from strongest to weakest. The conjugate base of HNO3 is more stable than the conjugate base of HNO2. Its molecular geometry is bent shape with sp2 hybridization. Strong vs Weak - Acetic acid, Is H3PO4 an acid or base? Whereas in case of H2CO3 it doesnt completely dissociate. Nitric acid is HNO3, and nitric acid reacts with water to form hydronium, H3O plus, and nitrate, NO3 minus, which is the conjugate base 2HNO3. Its incomplete dissociation make it weaker acid. Sodium hydroxide (NaOH) has a strong base because it dissociates completely in water to form hydroxide ions. It can resist ph change when a small amount of a strong acid/base is added to it. The solution has a pOH of 3 ( [OH ] = 0.001 M) because the weak base NH 3 only partially reacts with water. Is HCl, or HClO, a more powerful acid? Its instability is explained by its dual character as reducing and oxidising agent. HNO3 is very strong acid as compare to H2CO3 because HNO3 completely dissociate in water in order to provide H+ ion. Definitely, there is some increment in hydrogen ions. Nitrous acid (HNO2), a weak acid, is very unstable and exists only in aqueous solution. Is HNO3 or HNO2 a stronger acid? - Sage-Tips The cookie is set by GDPR cookie consent to record the user consent for the cookies in the category "Functional". We also use third-party cookies that help us analyze and understand how you use this website. is HClO3 weak or strong? - CHEMISTRY COMMUNITY Is h2co3 a strong or weak acid, taking this into account? still molecules of this acid in the water solution. All information are the indication of weak acid. Most of the cyanide exposure is unintentional. Nitrous acid (HNO2) is a weak acid. Also, nitric acid has an excessive negative charge on the 3 atoms of oxygen while the nitrous acid has an excessive negative charge spread on 2 atoms of oxygen. Strong Acids VS. Weak Acids. Flashcards | Quizlet Hence, HNO2is acid as it releases H+ ions in a water solution. Weak acids have a higher pH value at the same concentration as strongacids. It will be a weak acid or base if you see any other acid or base than one of these strong ones (unless I specifically say otherwise in the problem). KOH is a salt because it is made up of inorganic compounds and forms a solid without any solvent. Na2CO3 - strong. Nitrous Acid - Structure, Properties and Uses of HNO2 - BYJUS It is because it doesn't dissociate completely in water. Calculating the Concentration of a Chemical Solution, Strong Acids and the World's Strongest Acid. Rubidium hydroxide, RbOH. You can find out more about our use, change your default settings, and withdraw your consent at any time with effect for the future by visiting Cookies Settings, which can also be found in the footer of the site. Thus, HNO3 would be stronger. He holds a degree in B.Tech (Chemical Engineering) and has four years of experience as a chemistry tutor. It has a pH value of 2.67 in 10 mM solution. According to latest data released from June 2021, the construction and extraction occupations experienced the highest level of unemployment that month, with a rate of around 8.7 percent. strong acid, HNO2 is Nitrous Acid, so it is a weak acid. Strong or Weak - Hydroiodic acid, Is CH3COOH an acid or base? Such weak conductivity also refer HNO2 is weak acid. Can you drive a forklift if you have been banned from driving? Step 2:Find the pH of the equivalence point (s) and the volume (mL) of needed to reach it in titrations of 0.588 m KOH needed to reach it in titrations of 23.4 mL of 0.0390 M HNO2. So lets move to the point to be focused. Now,Is HNO2 a strong or weak acid? Is hno2 also a weak acid? Oxidation state of central atom; it is said that the compound is acidic if the central atom is in higher oxidation state than the compound in which same central atom is in lower oxidation state for example salt of Fe, Basicity of acidic compound; the basicity of acidic compound is the number of replaceable hydrogen. HNO2 is a weak acid. How Many Ml Of A 0.155 M Kcl Solution [] Second ranked were farming, fishing, and forestry occupations with a rate of around 8.6 percent. What are the Physical devices used to construct memories? Chemistry questions and answers. Or a substance is said to be acid when it increases the concentration of H+ion in solution and a substance is said to be base when it increases the concentration of OHin solution. READ ALSO: Which type of map is required for UPSC? completely dissociated in solution. Basicity of acidic compound; the basicity of acidic compound is the number of replaceable hydrogen. Acid with values less than one are considered weak. Strong or Weak - Carbonic, Is HI an acid or base? HCl, HBr, HI, HNO3, HClO3, HClO4, and H2SO4 (1st proton only) are the seven commonstrong acids. Conjugate acid is an acid that formed when the parent base compound gains one proton and the conjugate base is a base that formed when the parent acid compound loses one proton. All the other acids are weak. These cookies track visitors across websites and collect information to provide customized ads. No, it isnt a strong acid. Examples of Weak Acids - Important Weak Acids and their Properties - BYJUS Out of these, the cookies that are categorized as necessary are stored on your browser as they are essential for the working of basic functionalities of the website. 3 Nitrous acid is also used as an oxidizer in liquid fuel rockets. Given the job environment today, Engineers can consider themselves quite lucky, as only 0.0% are currently unemployed. As a result, whenever an acid produces a hydrogen ion, its a base. Before going specifically to HNO2, lets know what type of compound becomes acid. In the case of HNO2, when dissolved in an aqueous solution, it yields H3O+ and NO2 ions. Yes, HNO3 is a stronger acid than HNO2, one reason is that HNO2 does not dissociate completely in an aqueous solution to liberate proton or H+ ions whereas HNO3 is nearly 100% ionized in an aqueous solution and completely dissociates into H+ and NO3 ions. HNO2 (aq) H+(aq) + NO2(aq) it is the reaction where HNO2 dissociate to its constituent ions but dissociation is partial. Is HNO2 a weak acid in water? - Quora Because the oxidation rules states that the compound in which central atom is in higher oxidation state is higher acidic in nature. "Acidity of strong acids in water and dimethyl sulfoxide". HNO2 (aq) dissolves in aqueous solution to form H+ (aq) and NO2 (aq).
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