Home Chemistry Solution & Colligative Properties Colligative Properties The vapour pressure of a solvent decreases b…
Chemistry Solution & Colligative Properties Colligative Properties Single Correct MCQ
Published on: August 14, 2026

The vapour pressure of a solvent decreases by 10 mm of Hg when a non-volatile solute was

added to the solvent. The mole fraction of solute is 0.2, what should be the mole fraction of the solvent if the decrease in vapour pressure is to be 20 mm of Hg.

A
0.6
B
0.4
C
0.2
D
1

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