Question

The percentage of ethyl alcohol by weight is 46% in a mixture of ethanol and water. What is the mole fraction of alchohol in this solution?

Answer 1

Mole fraction is a way of expressing concentration of a mixture or a solution. It makes use of the mole values of the components making up the mixture. 

The mole fraction of a component of a mixture is calculated by dividing the mole of that component by the total moles of the solution. Here is how it is done: 

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