A mixture contains 80% of HCl and 20% H₂O by weight, what is the mole fraction

Question

A mixture contains 80% of HCl and 20% H₂O by weight, what is the mole fraction of HCl?

Options:

A . 0.15

B . 0.29

C . 0.45

D . 0.66

Answer: Option D
Answer: (d).0.66

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