Question

Define Henry's law about solubility of gas in water

Answer 1

Henry's law is one of the gas laws, formulated by the British chemist, William Henry, in 1803. It states that: At a constant temperature, the amount of a given gas dissolved in a given type and volume of liquid is directly proportional to the partial pressure of that gas in equilibrium with that liquid.

Answer 2

☞Answer☜

Laboratory method of preparation of dihydrogen

Hydrogen is prepared in the laboratory by the action of the dilute hydrochloric acid or dilute sulphuric acid on granulated zinc.

Use of Granulated Zinc.

Reaction:

Collection of Gas: Hydrogen gas is collected by downward displacement of water.