A nitrite solution is added to a saturated solution of iron `(II)` acidified with dilute acetic acid or with dilute sulphuric acid.If any reactions occurs then write the name and chemical composition of the product formed.Write also the chemical equations involved.

Explanation

To solve the problem, we will break down the reaction step by step and write the relevant chemical equations involved.

### Step 1: Reaction of Nitrite Ion with Acetic Acid
When a nitrite solution (NO₂⁻) is added to a saturated solution of iron (II) (Fe²⁺) acidified with dilute acetic acid (CH₃COOH), the nitrite ion reacts with acetic acid to form nitrous acid (HNO₂) and acetate ion (CH₃COO⁻).

**Chemical Equation:**
\[ \text{NO}_2^- + \text{CH}_3\text{COOH} \rightarrow \text{CH}_3\text{COO}^- + \text{HNO}_2 \]

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