Question

Justify the following statements with an explanation:
i) Solubility of calcium oxide decreases with increase in temperature.
ii) What happens to the solubility in exothermic process with regard to temperature?
iii) In endothermic process, solubility increases with increase in temperature.
iv) At a given temperature, increase in pressure increases the solubility of the gas

Answer 1

i) Solubility of calcium oxide decrease on increasing temperature because it is an exothermic reaction and on increasing temperature, equilibrium shifts to backward direction and solubility decreases.

ii) In exothermic reactions, on increasing temperature solubility decreases and on decreasing temperature the solubility increases.

iii) In endothermic reaction, on increasing temperature the equilibrium shifts to forward direction and solubility increases.

iv) On increasing the pressure the kinetic energy of the gaseous particles increases and the solubility of gas increases.