If 5.6 g of KOH is present in
(a) 500 mL and
(b) 1 litre of solution 
Calculate the molarity of each of these solutions.

2.82 g of glucose is dissolved in 30 g of water. Calculate the mole fraction of glucose and water.

What volume of 4M HCl and 2M HCl should be mixed to get 500 mL of 2.5 M HCl ?

0.24 g of a gas dissolves in 1 L of water at 1.5 atm pressure. Calculate the amount of dissolved gas when the pressure is raised to 6.0 atm at constant temperature.

Vapour pressure of a pure liquid A is 10.0 torr at 27°C. The vapour pressure is lowered to 9.0 torr on dissolving one gram of B in 20 g of A. If the molar mass of A is 200 then calculate the molar mass of B.

0.75 g of an unknown substance is dissolved in 200 g water. If the elevation of boiling point is 0.15 K and molal elevation constant is 7.5 K Kg mol^-1 then, calculate the molar mass of unknown substance

The depression in freezing point is 0.24K obtained by dissolving 1g NaCl in 200g water. Calculate van’t-Hoff factor. The molal depression constant is 1.86 K Kg mol^-1.

Which solution has the lower freening point ? 10 g of methanol (CH₃OH) in 100 g of water (or) 20 g of ethanol (C₂H₅OH) in 200 g of water.

How many moles of solute particles are present in one litre of 10^-4 M potassium sulphate ?