A sample of 56g of ethanol is dissolved in 36g of water.of Calculated the mole fraction of ethyl alcohol.

Explanation

`= (" Moles of the component ")/( "Total number of moles of all ") `
` " " No . Of moles " " = ( "Mass ")/( "Molecular mass ") `
` " " No. of moles of ethanol " "= ( 56)/( 46) = 1.28 moles `
` "No. of moles of ehtanol " " "= ( 56)/( 46) = 1.28 moles `
`"No . of water "" " = ( 36)/( 18) =2 moles `
` "No. of mole fraction of "`
` " ethyl/alcohol "" " =( 1.28)/( (1.28+ 2) ) `
` " "( 1.28)/( 3.28 )= 0.39`