Write the ka expression for an aqueous solution of nitrous acid:

Question

Keshawn Porter

Chemistry

19 December, 12:48

Write the ka expression for an aqueous solution of nitrous acid:

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Answers (1)

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Pierre Cherry · Answer 1

Balanced chemical reaction (dissociation) : HNO₂ (aq) ⇄ H⁺ (aq) + NO₂⁻ (aq).

Answer is: Ka = [NO₂⁻]·[H⁺] / [HNO₂].

Ka - acid dissociation constant.

[HNO₂] - equilibrium concentration of nitrous acid.

[NO₂⁻] - equilibrium concentration of nitrite anions.

[H⁺] - equilibrium concentration of hydrogen cations.