Question

Gases like ____, ____ and _____ dissolve in water.

• A. oxygen
• B. carbon dioxide and ammonia

Answer 1

Dissolution of a gas depends on how water and gas molecules interact with each other:

• Oxygen: Oxygen is dissolved in the water by means of air or by means of by-product of plants (growing in water) during respiration.
• Carbon dioxide: Due to the attraction of water molecule with the polar regions of CO₂, it gets dissolved in water.
• Ammonia: Like and like dissolves, similarly ammonia which is polar dissolves in water as water is also polar.

Thus, gases like oxygen, carbon-dioxide and ammonia dissolve well in water.