What is Henry’s law and Raoult’s law

Henry’s law

It states that partial pressure of the solute gas is proportional to a mole fraction of that component in liquid phase but proportionality constant is H

p_A = H* x_A=Y_A . P

       where

• p_A = equilibrium partial pressure of pure liquid 'A'
• H = Henry's law constant for A in specific solvents
• x_A= mole fraction of A in the liquid phase
• Y_A = mole fraction of A in the vapor phase
• P = equilibrium pressure
• Henry's law is valid when x_A is close to zero that is for a dilute solution of 'A'

Raoult’s law

It states that the equilibrium partial pressure of components 'A' is equal to the product of vapor pressure and mole fraction of 'A' in the liquid phase.

         Mathematically

p_A = P_A⁰* x_A=Y_A . P

      where

• P_A⁰ = vapor pressure of pure liquid A
• Raoult's law is valid when x_A is close to 1 that is when the liquid phase is almost pure