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The vapour pressures of ethanol and meth...

The vapour pressures of ethanol and methanol are `42.0mm`and`88.0mmHg`respectively .An ideal solution is formed at the same temperature by mixing `46.0g`of ethanol with `16.0g`of methanol. The mole fraction of methanol in the vapour is:

A

`0.467`

B

`0.502`

C

`0.513`

D

`0.556`

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The correct Answer is:
C
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