Question

In which of the following processes, chlorine is produced using atmospheric oxygen?

• A. Deacon's process
• B. Electrolysis of brine solution
• C. Heating HCl with MnO₂
• D. HCl with KMnO₄

Answer 1

Answer: (A)

Deacon's process

Answer 2

Deacon's process involves the catalytic oxidation of hydrogen chloride (HCl) by atmospheric oxygen ($O_2$) to produce chlorine ($Cl_2$).

The reaction is:

$4HCl(g) + O_2(g) \xrightarrow{CuCl_2/723K} 2Cl_2(g) + 2H_2O(g)$

In this process, atmospheric oxygen is directly consumed to produce chlorine. Other processes use different methods like electrolysis or reactions with oxidizing agents.