An ideal solution was obtained by mixing methanol and ethanol. If the partial vapour pressure of methanol and ethanol are `2.619 kPa` and `4.556 kPa`,
An ideal solution was obtained by mixing methanol and ethanol. If the partial vapour pressure of methanol and ethanol are `2.619 kPa` and `4.556 kPa`, respectively, the composition of vapour (in terms of mole fraction) will be
A. `0.635 MeOH, 0.365 EtOH`
B. `0.365 MeOh, 0.635 EtOH`
C. `0.574 MeOH, 0.326 EtOH`
D. `0.173 MeOH, 0.827 EtOH`
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Correct Answer - B
Composition in vapour `= X_("fraction") =(p)/(P_("Total")`
`X_(MeOH) = (2.619)/(7.175) = 0.365`
`:. X_(EtOH) = 0.635R`
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