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The vapour pressure of ethanol and metha...

The vapour pressure of ethanol and methanol ate `44.5 mm Hg` and `88.7 mm Hg`, respectively. An ideal solution is formed at the same temperature by mixing `60g` of ethanol and `40g` of methanol. Calculate the total vapour pressure of the solution and the mole fraction of methanol in the vapour.

Text Solution

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The correct Answer is:
`66.11 mm Hg, 0.656`
`P_("total") = X_("ethanol") P_("ethanol")^(@) +X_("methanol") xx P_("methanol")^(@)`
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