Freezing point of a 4% aqueous solution of X is equal to freezing point of 12% aqueous is reaction of Y .if molecular weight of X is A then molecular weight of Y is :

Options

A. 3A
B. A
C. 4A
D. 2A

Explanation

To solve the problem step by step, we will use the concept of freezing point depression and molality.

### Step 1: Understand the Given Information
We have two solutions:
- Solution X: 4% aqueous solution
- Solution Y: 12% aqueous solution

We know that the freezing point of solution X is equal to the freezing point of solution Y.
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