Question

What is the difference between Henry's law and Raoult's law?

Answer 1

Henrys law	Raoult's law
Henery's law signifies the dissolution of gas in a liquid medium.	Raoult's law signifies the relationship between vapour pressure and the partial pressure of the solute in the solution.
According to Henery's law, the amount of liquid that is dissolved in a liquid is directly proportional to the partial pressure of the gas at equilibrium conditions.	According to Raoult's law, the vapour pressure of the solvent in a solution is equal to the vapour pressure of pure solvent multiplied by the mole fraction of solvent
The proportionality constant Henry is used in Henry's law.	No such proportionality constant is used in Raoult's law.
Henery's law can be represented as: $\left[{\mathrm{A}}_{\left(\mathrm{aq}\right)}\right]={\mathrm{K}}_{\mathrm{H}}.{\mathrm{P}}_{\mathrm{A}}$; where $\left[{\mathrm{A}}_{\left(\mathrm{aq}\right)}\right]$ is the concentration of gas dissolved in liquid,${\mathrm{K}}_{\mathrm{H}}$ is the Henry's constant, ${\mathrm{P}}_{\mathrm{A}}$Partial pressure	Raoult's law can be represented as:${\mathrm{P}}_{\mathrm{solution}}={\mathrm{X}}_{\mathrm{solvent}}.{\mathrm{P}}_{\mathrm{solvent}}$;where ${\mathrm{P}}_{\mathrm{solution}}$vapour pressure of the solvent, ${\mathrm{X}}_{\mathrm{solvent}}$ mole fraction of solvent,${\mathrm{P}}_{\mathrm{solvent}}$ vapour pressure of the pure solvent.