Question

Y g of non-volatile organic substance of molecular mass M is dissolved in 250 g benzene . Molal elevation constant of benzene is `K_(b)` . Elevation in its boiling point is given by :
A. `M/(K_(b) Y`
B. `(4K_(b) Y)/M`
C. `(K_(b) Y)/4M`
D. `(K_(b)Y)/M`

Answer 1

Correct Answer - B
`Delta T = (1000 xx K_(b) xx Y )/(250 xx M)=(4K_(b)Y)/M`