Name the experiment and state it's procedure to demonstrate the high solubility of ammonia.

Fountain Experiment demonstrates the high solubility of ammonia in water.

Apparatus:

• Dry round bottom flask filled with ammonia gas.
• Mouth of the flask has a rubber stopper with two holes for (a) Jet tube, (b) Dropper containing water.
• Red litmus solution is placed in the trough below.

Procedure:

• The dropper containing water is squeezed and water enters the flask.

Observation:

• Ammonia gas present in the flask dissolves in water due to it's high solubility, thereby creating a partial vacuum in the flask.
• The outside pressure being higher pushes the red litmus solution up the jet tube which emerges out at the end of the tube as a blue fountain.

Inference:

• Ammonia gas is highly soluble in water and basic in nature.