1. Tardigrade
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  3. Chemistry
  4. An ideal solution was obtained by mixing methanol and ethanol. If the partial vapour pressure of methanol and ethanol in solution are 2.619 kPa and 4.556 kPa respectively, the composition of vapour (in terms of mole fraction) will be :

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Q. An ideal solution was obtained by mixing methanol and ethanol. If the partial vapour pressure of methanol and ethanol in solution are $2.619 \,kPa$ and $4.556 \,kPa$ respectively, the composition of vapour (in terms of mole fraction) will be :

Solutions

Solution:

$P_{\text {Total }}=2.619+4.556=7.175 kPa$

$X_{ MeOH }=\frac{P_{ MeOH }}{P_{\text {Total }}}=\frac{2.619}{7.175}=0.365$

$X_{\text {EtOH }}=1-0.365=0.635$