1.

Calculate the dmole fraction of ethyl alcohol and water in a solution in which 46 g of ethlyl alcohl and 180g of water are mixed together.

Answer»


Solution :`"No. of moles of ethyl alcohol" (n_(C_(2)H_(5)OH))=("Mass of ethyl alcogol")/("Molar mass")=((46g))/((46g mol^(-1)))=1mol`
`"No. of moles of WATER"(n_(C_(2)H_(5)O))=("Mass of water")/("Molar mass")=((180G))/((18"g mol"^(-1)))=10 mol`
`"MOLE fration of ethyl alcohol "(x_(C_(2)H_(5)OH))=n_(C_(2)H_(5)OH)/(n_(C_(2)H_(5)OH)+n_(H_(2)O))=((1 mol))/((1+10)mol)=0.09`.


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