Solutions Test ...

The relative lowering in vapour pressure is proportional to the ratio of number of

Vapour pressure of a pure liquid X is 2 atm at 300 K. It is lowered to 1 atm on dissolving 1 g of Y in 20 g of liquid X. If molar mass of X is 200, what is the molar mass of Y?

An aqueous solution of 2% non - volatile solute exerts a pressure of 1.004 bar at the normal boiling point of the solvent. What is the molar mass of the solute?

In the graph plotted between vapour pressure (V.P) and temperature (T).

A solution containing 12.5g of non-electrolyte substance in 185g of water shows boiling point elevation of 0.80K. Calculate the molar mass of the substance. (K_b ​= 0.52K kg mol⁻¹ )

If 1g of solute (molar mass = 50g mol⁻¹ ) is dissolved in 50g of solvent and the elevation in boiling point is 1K. The molar boiling constant of the solvent is?

2 g of sugar is added to one litre of water to give sugar solution. What is the effect of addition of sugar on the boiling point and freezing point of water?

Sprinkling of salt helps in clearing the snow-covered roads in hills. The phenomenon involved in the process is

Equimolar solutions in the same solvent have

A 5% solution (w/W) of cane sugar (molar mass = 342 g mol^-1 ) has freezing point of 271 K. What will be  the freezing point of a 5% glucose (molar mass = 18 g mol^-1 ) in water if freezing point of pure water is 273.15 K?