Question

Which gas is released when hypochlorous acid is heated ?

• A. hydrogen
• B. chlorine
• C. nitrogen
• D. oxygen

Answer 1

The correct option is D

oxygen

Explanation:

• Hypochlorous acid is an oxo acid of chlorine.
• When hypochlorous acid is heated it decomposes into Hydrogen chloride and Oxygen gas.

$\underset{\mathrm{Hypochlorous}\mathrm{acid}}{2\mathrm{HOCl}\left(\mathrm{l}\right)}\stackrel{∆}{\to }\underset{\mathrm{Hydrogen}\mathrm{chloride}}{2\mathrm{HCl}\left(\mathrm{g}\right)}+\underset{\mathrm{Oxygen}}{{\mathrm{O}}_2\left(\mathrm{g}\right)}$

Thus, among the given options (D) oxygen is the correct answer.