Question

Hydrogen chloride dissolves in water forming an acidic solution.

Name the experiment which demonstrates that Hydrogen chloride is soluble in water.

Answer 1

• The experiment that demonstrates the solubility of water in Hydrogen Chloride is the Fountain experiment.
• In the Fountain Experiment a round-bottomed flask of large size is taken containing soluble gas like Hydrogen chloride that is placed upside down and connected to water possessing a blue litmus solution indicator by a glass tube.
• The addition of a small amount of water to the flask creates a lower pressure in the flask, a fountain of the red solution is created due to the sucking of water from the trough to the flask.
• Therefore, the experiment that demonstrates the solubility of Hydrogen chloride ($\mathbf{HCl}$) in water is Fountain experiment.