A solutionn of urea in water has a boiling point of `100.18^(@)C`. Calculate the freezing point of the same direction.Molal constants for water `K_(f)` and `K_(b)` are `1.86` and `0.512` respectively.

Explanation

To solve the problem, we need to calculate the freezing point depression of the urea solution based on the given boiling point elevation. Here are the steps to find the freezing point of the solution:

### Step 1: Identify the given data
- Boiling point of the urea solution: \( T_b = 100.18^\circ C \)
- Boiling point of pure water: \( T_b^0 = 100^\circ C \)
- Molal freezing point depression constant for water: \( K_f = 1.86 \, \text{°C kg/mol} \)
- Molal boiling point elevation constant for water: \( K_b = 0.512 \, \text{°C kg/mol} \)

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