The vapour pressure lowering caused by the addition of 100 …

Chemistry Solution & Colligative Properties Colligative Properties Single Correct MCQ

Published on: August 14, 2026

The vapour pressure lowering caused by the addition of 100 g of sucrose (molecular mass ) to 1000 g of water if the vapour pressure of pure water at is 23.8 mm Hg is:

1.25 mm Hg

0.125 mm Hg

1.15 mm Hg

00.12 mm Hg

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The correct answer is:

Given, mass of sucrose added and mass of water

Moles of sucrose (n) mole

Moles of water mole

Vapour pressure of pure water, According to Raoult's law,

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