A `0.2m` aqueous solution of KCl freezes at `-0.68^(@)C` .Calculate 'I' and the osmotic pressure at `0^(@)C`. Assume the volume of solution to be that of pure `H_(2)O` and `K_(f)` for `H_(2)O` is `1.86`

Explanation

To solve the problem step by step, we will follow these steps:

### Step 1: Calculate the van 't Hoff factor (I)

The freezing point depression (\( \Delta T_f \)) can be calculated using the formula:
\[ \Delta T_f = K_f \times m \times I \]
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