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The vapour pressure of ethyl alcohol at ...

The vapour pressure of ethyl alcohol at 298K is 40mm of Hg. Its mole fraction in a solution with methyl alcohol is 0.80. what is its vapoure pressure in solution. If the mixture obeys Raoult's law.

A

8 mm Hg

B

32 mm Hg

C

48 mm Hg

D

80 mm Hg

Text Solution

Verified by Experts

The correct Answer is:
B
Vapour pressure of ethyl alcohol
`=40xx0.80`
`=32` mm Hg
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