Question

what is henry 's law ? explain it in detail

Answer 1

Henry's law is a gas law  that states that the amount of dissolved gas is proportional to its partial pressure in the gas phase. The proportionality factor is called the Henry's law constant. It was formulated by the English chemist William Henry, who studied the topic in the early 19th century. In his publication about the quantity of gases absorbed by water,[1] he described the results of his experiments:

..."water takes up, of gas condensed by one, two, or more additional atmospheres, a quantity which, ordinarily compressed, would be equal to twice, thrice, &c. the volume absorbed under the common pressure of the atmosphere."

Answer 2

Hey !!

Answer = It states that at a constant temperature, the solubility of a gas in a liquid is directly proportional to the pressure of the Gas.

→ The most commonly used form of Henry's Law states that the partial pressure of a gas in vapour phase is proportional to the mole fraction of the gas (x) in the solution and is expressed as     

                     P = Kh x                      

Here Kh is the Henry's constant and x is the mole fraction of the gas.