Question

State the law relating the pressure of a gas and its solubility in a liquid

Answer 1

Henry's law states that at a constant temperature, the solubility of a gas in a liquid is directly proportional to the pressure of the gas over the solution.

Applications of the law are:

• To increase the solubility of CO2 in soft drinks and soda water, the bottle is sealed under high pressure.

•  Scuba divers must cope with high concentrations of dissolved Nitrogen with breathing air at high pressure underwater. To avoid this air is diluted with He.

Answer 2

Answer:

Henry's Law

The partial pressure of a gas in vapour phase is directly propotional to mole fraction of gas in solution.

Solubility of gas in liquid decrease with the increase in temperature.

Because dissolution of gas in liquid is highly exothermic process.

And solubility of gas in liquid increases with the decrease in temperature.

Solubility of gas in liquid increases with the increases with the increase in pressure,because solubility of gas in liquid is directly propotional to pressure

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