A mixture of 100 m mol of and 2 g of sodium sulphate was dissolved in water and the volume was made up to 100 mL .The mass of calcium sulphate formed and the concentration of in resulting solution , respectively , are : (Molar mass of , are 74, 143 and 136 g , respectively ; )
Mole Fraction -
As we have learned in mole concept .
The reaction is -
Vapour Pressure -
It is defined as pressure exerted by vapours on liquid surface at equilibrium and condensation.
Raoult's Law -
The partial pressure of any volatile constituents of a solution at a given temperature is equal to the product of vapour pressure of pure constituent and its mole fraction in the solution.
and are vapour pressures of pure liquids.
and are vapour pressures of A and B respectively.
Mathematical Expression -