Boiling point of water at 750 mm Hg is `99.63^(@)C`. How much sucrose is to be added to 500 g of water such that it boils at `100^(@)C`? Molal elevation constant for water is `"0.52 K kg mol"^(-1)`.

Explanation

To solve the problem of how much sucrose needs to be added to 500 g of water to raise its boiling point to 100°C, we can follow these steps:

### Step 1: Determine the boiling point elevation (ΔTb)
The boiling point of water at 750 mm Hg is given as 99.63°C. We want the boiling point to reach 100°C.

\[ \Delta T_b = T_b (final) - T_b (initial) = 100°C - 99.63°C = 0.37°C \]
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