What weight of glucose must be dissolved in … of water to lower the vapour pressure by … ? (Assume dilute solution is being formed) Given : Vapour pressure of pure water is … at room temperature. Molar mass of glucose is …

Option A. The lowering of vapor pressure of a solvent by a nonvolatile solute is given by Raoult's law:

Solutions and Colligative Properties

JEE Main 2023 · 11 Apr, Evening shift · Q2018

ChemistryHard56×since 2002Q2018

What weight of glucose must be dissolved in

100 \mathrm{~g}

of water to lower the vapour pressure by

0.20 \mathrm{~mm} ~\mathrm{Hg}

? (Assume dilute solution is being formed) Given : Vapour pressure of pure water is

54.2 \mathrm{~mm} ~\mathrm{Hg}

at room temperature. Molar mass of glucose is

180 \mathrm{~g} \mathrm{~mol}^{-1}