(a) State Raoult law for a solution containing volatile components.
How does Raoult' s law become a special case of Henry's law?
(b) 1.00 g of a non-electrolyte solute dissolved in 50 g of benzene lowered the freezing point of benzene by 0.40 K. Find the molar mass of the solute. `(K_(f)" for benzene "=5.12 kg mol^(-1))`

Options

A. `128g mol^(-1)`
B. `256g mol^(-1)`
C. `64g mol^(-1)`
D. `32g mol^(-1)`

Answer

B

Explanation

`Delta T_(f)=K_(f)(W_(B))/(m_(B)).(1000)/(W_(A))`