At `298 K` , the vapour pressure of water is `23.75 mm Hg`. Calculate the vapour pressure at the same temperature over `5%` aqueous solution of urea. `[CO(NH_(2))_(2)]`.

Explanation

To calculate the vapor pressure of a 5% aqueous solution of urea at 298 K, we will use Raoult's law. Raoult's law states that the vapor pressure of a solvent in a solution is equal to the vapor pressure of the pure solvent multiplied by the mole fraction of the solvent in the solution.

### Step-by-Step Solution:

**Step 1: Determine the mass of urea and water in the solution.**
- Given that we have a 5% aqueous solution of urea, this means there are 5 grams of urea in 100 grams of the solution.
- The mass of water in the solution is:
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