Question

calculate the mole fraction of HCL in a solution containing 24.8 % of HCL by mass

Answer 1

It means water = 100 - 24.8
= 75.2 %
No. Of moles of water = 75.2/18
=4.17


Now, no of moles of HCl = 24.8/36.5
= 0.67

Now mole fraction = 0.67/4.17+0.67
=0.67/4.84
=0.13

Hope will help you