The depression in freezing point of `0.01 m` aqueous `CH_(3)CooH` solution is `0.02046^(@)`, `1 m` urea solution freezes at `-1.86^(@)C`. Assuming molality equal to molarity, `pH` of `CH_(3)COOH` solution is

Options

A. 2
B. 3
C. `3.2`
D. `4.2`

Explanation

To find the pH of a 0.01 m aqueous acetic acid (CH₃COOH) solution, we will follow these steps:

### Step 1: Determine the depression in freezing point
The depression in freezing point (ΔTf) is given as 0.02046°C for the 0.01 m acetic acid solution.

### Step 2: Use the formula for freezing point depression
The formula for freezing point depression is:
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