Determine the osmotic pressure of a solution prepared by dissolving 25 mg of \(K_{2}SO_{4}\) in 2 litre of water at 25° C, assuming that it is completely dissociated.

Amongst the following compounds, identify which are insoluble, partially soluble and highly soluble in water?
(iv) ethylene glycol

Determine the amount of \(CaCl_{2}\) (\(i\) = 2.47) dissolved in 2.5 litre of water such that its osmotic pressure is 0.75 atm at 27° C.

The vapour pressure of water is 12.3 kPa at 300 K. Calculate vapour pressure of 1 molal solution of a non-volatile solute in it.

How many mL of 0.1 M HCl are required to react completely with 1 g mixture of \(Na_{2}CO_{3}\) and \(NaHCO_{3}\) containing equimolar amounts of both?

Give an example of a solid solution in which the solute is a gas.

Gas	KH/k bar
Ar	40.3
CO2	1.67
HCHO	1.83 × 10−5
CH4	0.413

where K_H is Henry's Law constant in water. The order of their solubility in water is :

Nalorphene (\(C_{19}H_{21}NO_{3}\)), similar to morphine, is used to combat withdrawal symptoms in narcotic users. Dose of nalorphene generally given is 1.5 mg. Calculate the mass of \(1.5 \times 10^{-3}\) m aqueous solution required for the above dose.

Define the following terms:
(i) Mole fraction

At 300 K, 36 g of glucose present in a litre of its solution has an osmotic pressure of 4.98 bar. If the osmotic pressure of the solution is 1.52 bars at the same temperature, what would be its concentration?

Amongst the following compounds, identify which are insoluble, partially soluble and highly soluble in water?
(iii) formic acid

Vapour pressure of water at 293 K is 17.535 mm Hg. Calculate the vapour pressure of water at 293 K when 25 g of glucose is dissolved in 450 g of water.

A solution of glucose in water is labelled as 10% w/w, what would be the molality and mole fraction of each component in the solution? If the density of solution is 1.2 g \(mL^{-1}\), then what shall be the molarity of the solution?

Heptane and octane form an ideal solution. At 373 K, the vapour pressures of the two liquid components are 105.2 kPa and 46.8 kPa respectively. What will be the vapour pressure of a mixture of 26.0 g of heptane and 35 g of octane?

Suggest the most important type of intermolecular attractive interaction in the following pairs.
(iii) \(NaClO_{4}\) and water

State Henry’s law and mention some important applications.

Define the following terms:
(iii) Molarity

How much ethyl alcohol must be added to 1 litre of water so that the solution will freeze at

– 14°C ? (Kf for water = 1.86°C mol-1) 

Suggest the most important type of intermolecular attractive interaction in the following pairs.
(iv) methanol and acetone

If the density of some lake water is 1.25g \(mL^{-1}\) and contains 92 g of \(Na^{+}\) ions per kg of water, calculate the molarity of \(Na^{+}\) ions in the lake.