Question

The rate of evaporation of an aqueous solution decreases with an increase in humidity. Comment on the following statement.

Answer 1

Explanation

• Humidity is defined as the amount of water vapour already present in the environment.
• Evaporation is an endothermic process in which water absorbs heat from the surroundings and gets converted into water vapour.
• High humidity in the environment indicates that the air is already saturated with water vapour. This indicates that the air can no more accommodate water vapours in it.
• This causes the rate of evaporation to decrease significantly.
• Therefore, the rate of evaporation of an aqueous solution decreases with an increase in humidity.