Normal freezing point of a solvent is `150^@C`. A 0.5 molal solution of urea in the above solvent causes a freezing point depression of two degrees. Calculate the molal depression constant

Explanation

To solve the problem, we need to calculate the molal depression constant (Kf) using the formula for freezing point depression. Here are the steps to find the solution:

### Step 1: Understand the given data
- Normal freezing point of the solvent (Tf) = 150°C
- Freezing point depression (ΔTf) = 2°C
- Molality of the urea solution (m) = 0.5 molal

### Step 2: Write the formula for freezing point depression
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