The most commonly used form of Henry’s
law states that “the partial pressure of the gas in
vapour phase (p) is proportional to the mole fraction
of the gas (x) in the solution” and is expressed as:
p = KH x
(1 11)
Here KH is the Henry’s law constant If we draw a
graph between partial pressure of the gas versus mole
fraction of the gas in solution, then we should get a plot
of the type as shown in Fig 1