Solutions PYQs - Last 5 Years

The elevation in boiling point for 1 molal solution of non-volatile solute A is \(3 \mathrm{~K}\). The depression in freezing point for 2 molal solution of \(\mathrm{A}\) in the same solvent is 6 \(K\). The ratio of \(K_{b}\) and \(K_{f}\) ...

Solute A associates in water. When 0.7 g of solute A is dissolved in 42.0 g of water, it depresses the freezing point by 0.2\(^\circ\)C. The percentage association of solute A in water, is :
[Given : Molar mass of A = 93 g mol\(-\)1. Molal ...

The depression in freezing point observed for a formic acid solution of concentration \(0.5 \mathrm{~mL} \mathrm{~L}^{-1}\) is \(0.0405^{\circ} \mathrm{C}\). Density of formic acid is \(1.05 \mathrm{~g} \mathrm{~mL}^{-1}\). The Van't Hoff f...

Two solutions A and B are prepared by dissolving 1 g of non-volatile solutes X and Y, respectively in 1 kg of water. The ratio of depression in freezing points for A and B is found to be 1 : 4. The ratio of molar masses of X and Y is

The osmotic pressure of blood is 7.47 bar at 300 K. To inject glucose to a patient intravenously, it has to be isotonic with blood. The concentration of glucose solution in gL\(-\)1 is _____________.
(Molar mass of glucose = 180 g mol\(-\)1...

A company dissolves 'x' amount of CO2 at 298 K in 1 litre of water to prepare soda water. X = __________ \(\times\) 10\(-\)3 g. (nearest integer)
(Given : partial pressure of CO2 at 298 K = 0.835 bar.
Henry's law constant for CO2 at 298 K =...