Question

Calculate the mole fraction of water in a mixture of 15g of water 18g of acetic acid and 84g of ethyl alcohol

Answer 1

Answer:

moles of water in mixture=12/18=2/3

moles of acetic acid in mixture = 108/60 = 18/10

moles of ethanol in mixture= 92/46 = 2

mole fraction of water = (2/3)/(2/3+1.8+2) = (2/3)/[(2+5.4+6)/3] =2/13.4=20/134 = 10/67

therefore 10/67 is the mole fraction of water in mixture.

Explanation: