Question

The boiling point of solution obtained by dissolving 0.51 g anthracene in 35 g chloroform increases by `0.32^(@)`C then what will be the molar mass of anthracene if for chloroform `K_(b)=3.9K Kg mol^(-1)` :-
A. 175.2
B. 177.6
C. 178.6
D. 182.3

Answer 1

Correct Answer - B
`DeltaT_(b)=(1000K_(b)w)/(mW)`
and m `=(1000K_(b)w)/(DeltaT_(b)w)`