What is the mole fraction of rectified spirit?

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Calculate the mole fraction of ethanol and water in a sample of rectified spirit which contains 46 % ethanol by mass

Number of moles of ethanol is 46/46 i.e 1Number moles of water is 54/18 i.e 3

mole fraction of ethanol = no.of moles of ethanol / total number of moles

$Molefraction=\frac{n_1\left(numberofmolesofsolute\right)}{n_1+n_2(Numberofmolesofsolute+numberofmolesofsolvent)}$

$Now{n}_1\left(molesofethanol\right)$

$Molefractionofethanol=\frac{Numberofmolesofethanol}{Totalnumberofmoles}=\frac{1}{3}=0.33$

$Molefractionofwater=1-molefractionofethanol$

$=1-0.33=0.66$

N

o

w

n1​

(molesofethanol)

$Hencemole$