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Benzene and toluene form nearly ideal so...

Benzene and toluene form nearly ideal solutions. At `20^@C` the vapour pressure of benzene is 75 torr and that of toluene is 22 torr. The partial vapour pressure of benzene at 20°C for a solution containing 78g of benzene and 46g of toluene in torr is:

A

50

B

25

C

`37.5`

D

`53.5`

Text Solution

Verified by Experts

The correct Answer is:
A
`P_(B)=P_(B)^(o)xx x_(B)=75 xx (1)/(1.5)=50` torr
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