Explain why dilute hcl can't be concentrated beyond 22.2%

Asked by Kartikeya | 12th Jan, 2018, 05:13: PM

Expert Answer:

When the concentration of HCl gas in water is 22.2% by weight, it forms a constant boiling mixture.
At this concentration, if dilute HCl is heated then water and HCl vaporises in same proportion by weight and
hence dilute hydrochloric acid cannot be diluted.

Answered by Ramandeep | 12th Jan, 2018, 06:27: PM