A liquid S has a vapour pressure P° at 30°C. If x gm of non-volatile solute is dissolved…
Chemistry · JEE Main · NTA Exams — Solutions
A liquid S has a vapour pressure P° at 30°C. If x gm of non-volatile solute is dissolved in y gm of pure liquid, the vapour pressure becomes \(\frac{19}{20}\) th of its original value. Assuming the molecular weight of the solvent is \(\frac{1}{5}\)th of the molecular weight of solute. The ratio x : y is:
- 1 : 20
- 3 : 20
- 4 : 20
- 5 : 20
Answer
(B) 3 : 20
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