The vapour pressure of benzene at`80^(@)C` is lowered by `10mm` by dissoving `2g`of a
Channel: Doubtnut
Date: 26/01/2020

The vapour pressure of benzene at`80^(@)C` is lowered by `10mm` by dissoving `2g`of a non-volatile substance in`78g`of benzene .The vapour pressure of pure benzene at `80^(@)C`is `750mm`.The molecular weight of the substance will be: