Solutions Test ...

This section contains multiple choice questions. Each question has four choices (a), (b), (c) and (d), out of which ONLY ONE is correct

The vapour pressure of pure liquid solvent is 0.80 atm. When a non-volatile solute B is added to the solvent, its vapour pressure drops to 0.60 atm. Thus, mole fraction of the component B is

Vapour pressure of pure water at 298 K is 23.8 torr. Thus, vapour pressure of a solution containing 6 g urea and 68.4 g sucrose in 10 moles of water is

Vapour pressure of nitrobenzene (molar mass = 123 g mol^-1 ) is 3.6 kNm^-2 and that of water (molar mass = 18 g mol^-1 ) is 977 kNm^-2 . They form immiscible mixture at the given temperature. Thus, percentage of nitrobenzene in the vapour phase is

The vapour pressure of n-hexane at 350 K is 840 torr and that of cyclohexane is 600 torr. Mole fraction of hexane in the mixture that boils at 350 K and 1 atm pressure assuming ideal behaviour is

At 298 K, the vapour pressure of pure water is 23.76 mm Hg and that of an aqueous solution is 22.98 mm Hg. Thus, molality of solution is (assume dilute solution) 

A binary liquid solution is prepared by mixing n-heptane and ethanol. Which one of the following statements is/are correct regarding the behaviour of the solution?

18 g of glucose (C₆ H₁₂ O₆ ) is added to 178.2 g of water. The vapour pressure of water for this aqueous solution at 100 °C is

Which of the following liquid pairs shows a positive deviation from Raoult ’s law?

A solution of two liquids boils at a temperature more than the boiling point of either of them. Hence, the binary solution shows

Lowering of vapour pressure of an aqueous solution of a non-volatile non-electrolyte 1 molal aqueous solution at 100 °C is