henry\'s law states that vapour pressure of a component = mole fraction x vapour pressure in pure state. vapor pressure of br2 = 0.05 x 122.36 torr vapor pressure of CCl4 = 0.95 x 33.85 torr total vapor pressure = 0.05 x 122.36 + 0.95 x 33.85 torr Solution henry\'s law states that vapour pressure of a component = mole fraction x vapour pressure in pure state. vapor pressure of br2 = 0.05 x 122.36 torr vapor pressure of CCl4 = 0.95 x 33.85 torr total vapor pressure = 0.05 x 122.36 + 0.95 x 33.85 torr.