NEET Chemistry Raoult's Law MCQ Question
A solution is prepared by mixing a non-volatile solute in a volatile solvent. If the mole fraction of the solvent in the solution is 0.8 and the vapor pressure of the pure solvent is 100 mmHg, what is the vapor pressure of the solution according to Raoult's Law?
80 mmHg
100 mmHg
20 mmHg
0 mmHg
Correct Answer
Detailed Explanation
According to Raoult's Law, the vapor pressure of the solution is the product of the mole fraction of the solvent and the vapor pressure of the pure solvent. Thus, the vapor pressure of the solution is 0.8 * 100 mmHg = 80 mmHg.
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