Which method would increase the solubility of gas

BY increasing pressure and decreasing temperature.

Explanation:

The solubility of a gas increases with decrease in the temperature. Also the solubility of a gas increases with increasing pressure.

A gas can be compressed by increasing the pressure and decreasing the temperature. FOR example the gas in domestic LPG cylinders are in compressed form inside the cylinder. A gas takes the form of a liquid after compressing. Whenever it comes back to normal temperature and pressure it takes back to its gaseous form back.

The gaseous oxygen is water soluble and does not react with it

O2 + 2H2O + 4 e = 4 OH-

The factors affecting the solubility of a Gas are:

1. Temperature. Basically, The solubility of gas increases with temperature.

2. Stirring increases the speed of dissolving.