HNO2 is a weaker acid than HNO3. HNO2 (Nitrous acid) is a weak acid. Because it does not ionize 100% or only partially dissociates in an aqueous solution.
A nitrogen oxoacid with the formula HNO3 is nitric acid, in which the nitrogen atom is linked to a hydroxyl group and the other two oxygen atoms by analogous bonds. It serves as a reagent and a protic solvent. It is a nitrate's conjugate acid.
Weak acids are those that, when dissolved in solutions, do not completely separate into their individual ions. A balance between the weak acid's concentration and its component ions is created when it is dissolved in water. Below is a list of some prevalent instances of weak acids.
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