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Y g of non-volatile organic substance of...

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`

Text Solution

Verified by Experts

The correct Answer is:
B
`Delta T = (1000 xx K_(b) xx Y )/(250 xx M)=(4K_(b)Y)/M`
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