Question

calculate the mole fraction of a 90%ethyl alcohol (by mass) solution​

Answer 1

Explanation:

Ethanol 46 g/mol.

Water 18 g/mol.

Calculate moles of ethanol: 14.6 grams x 1 mol / 46 grams = 0.317 moles.

Calculate moles of water: 53.6 grams x 1 mol / 18 grams = 2.98 moles.

Mole fraction = moles of component / total moles in solution.

= 0.317 / (0.317 + 2.98) = 0.0963.