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The vapour pressure of benzene at ...

The vapour pressure of benzene at a certain temperature is 640 mm of Hg non-volayile and non--elecrolyte solute weighing 2.175 g is added to 39.08 g of benzene . The vapour pressure of the soution is 600 mm of Hg . The molar mass of the solute is _____` g mol ^(-1)`

A

`49.50`

B

`59.6`

C

`69.5`

D

`79.8`

Text Solution

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The correct Answer is:
C
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