JEE Advanced 2012 Paper 2 Chemistry Q5

Chemistry · Solutions, Mixtures & Activities

Problem

For a dilute solution containing

2.5\,\mathrm g

of a non-volatile non-electrolyte solute in

100\,\mathrm g

of water, the elevation in boiling point at

1\,\mathrm{atm}

pressure is

2^\circ\mathrm C

. Assuming concentration of solute is much lower than the concentration of solvent, the vapour pressure (mm of Hg) of the solution is (take

K_b=0.76\,\mathrm{K\,kg\,mol^{-1}}

)