Name two gases that can be used in the study of the fountain experiment.
Name two gases that can be used in the study of the fountain experiment.

Solution:

Hydrogen chloride and ammonia gas.

At a basic level, the experiment covers principles like solubility and gas laws. When litmus is added to the reaction mixture, it illustrates the alkalinity or acidity property of gases and indicates the colour change caused by the gas dissolving in water.

Ammonia is moderately basic; a 1.0 M aqueous solution has a pH of 11.6.

Hydrochloric acid (HCl) gas is a strong acid.