Question

State and explain Henry's law

Answer 1

In chemistry, Henry's law is one of the gas laws 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."

In other words, 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.

An example where Henry's law is at play is in the depth-dependent dissolution of oxygen and nitrogen in the blood of underwater divers that changes during decompression, leading to decompression sickness.

Answer 2

$\bold {\large{\underline {Henry's\:Law :-}}}$$<i>$

$<b>Henry's law : </b>$At a constant temperature, the solubility of gas in liquid is directly proportional to pressure of gas.

♢ The partial pressure of a gas in vapour phase is proportional to mole fraction of the gas in the solution.