Give one chemical test to distinguish between the following pairs of compound:
Formic acid and acetic acid.

Explanation

To distinguish between formic acid (HCOOH) and acetic acid (CH3COOH), we can use the Tollens' test. Here’s a step-by-step solution:

### Step 1: Prepare Tollens' Reagent
Tollens' reagent is prepared by mixing silver nitrate (AgNO3) with ammonia (NH3) to form a complex solution of silver ammonium nitrate.

### Step 2: Add the Reagent to the Compounds
Take a small amount of formic acid in one test tube and a small amount of acetic acid in another test tube. To each test tube, add a few drops of Tollens' reagent.

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