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.
- wherein
and are vapour pressures of pure liquids.
and are vapour pressures of A and B respectively.
Mathematical Expression -
Unis of
- wherein
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