Question

or NO2−NO2−, write an equation that shows how the anion acts as a base. Express your answer as a chemical equation. Identify all of the phases in your answer.

Answer 1

Answer : The chemical reaction will be:

$NO_2^-(aq)+H_2O(l)\rightleftharpoons HNO_2(aq)+OH^-(aq)$

Explanation :

According to Arrhenius concept, a base is defined as a substance which donates hydroxide ions $(OH^-)$ when dissolved in water and an acid is defined as a substance which donates hydronium ions $(H_3O^+)$ in water.

As per question, when $NO_2^-$ react with water then it combine with hydrogen of water and gives $HNO_2$ and $OH^-$ as a product.

The chemical reaction will be:

$NO_2^-(aq)+H_2O(l)\rightleftharpoons HNO_2(aq)+OH^-(aq)$