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Chemistry · PYQ NEET UG 2016(1)
हिन्दीAt \( 100 °\text{C} \), the vapour pressure of a solution of \( 6.5 \text{ g} \) of a solute in \( 100 \text{ g} \) water is \( 732 \text{ mm} \). If \( K_b = 0.52 \), the boiling point of this solution will be
Correct answer · Option 3
\( 101 °\text{C} \)
Explanation
Using \( \frac{\Delta P}{P^0} = \frac{w \times M}{m \times W} \) and \( \Delta T_b = K_b \times m \), we find \( \Delta T_b \approx 1 °\text{C} \), making the boiling point \( 101 °\text{C} \).
