Question

How do the solubility of a solid and a gas gets affected by

(a) Increase in temperature ?

(b) Increase in pressure ?

Answer 1

(a) Solubility of a solid solute generally increases with an increase in temperature. This makes it possible to prepare supersaturated solutions.
Solubility of a gas decreases with an increase in temperature.

(b) Pressure has practically no effect on the solubility of a solid (solute) in water.
In the case of gases, the amount of a gas dissolved in water increases with an increase in pressure.