Most HCl(g)is obtained commercially A)by reaction of MnO₂ with concentrated HCl. B)by reaction of NaCl with concentrated H₂SO₄. C)by electrolysis of NaCl. D)by distillation of HCl(aq). E)as a by-product from the chlorination of hydrocarbons.

Question

Quizplus · Accepted Answer

HCl gas is mostly obtained as a by-product during the chlorination of hydrocarbons, which is used in the production of various chemicals including PVC and refrigerants. The other options are not primary sources of HCl gas. MnO2 and concentrated HCl produce chlorine gas, not HCl gas (option A). NaCl and concentrated H2SO4 produce HCl gas, but this is not a common industrial method (option B). Electrolysis of NaCl produces NaOH and Cl2 gas, not HCl gas (option C). Distillation of HCl(aq) produces concentrated HCl(aq), not HCl gas (option D).

Most HCl(g)is Obtained Commercially