MCQ
Cholrine gas is produced from $\text{HCI}$ by the addition of:
- A$ \mathrm{K}_2 \mathrm{SO}_4 $
- B$ \mathrm{KCl} $
- C$ \mathrm{KNO}_3 $
- ✓$ \mathrm{KMnO}_4 $
✓
Answer
Correct option: D.
$ \mathrm{KMnO}_4 $
$ \mathrm{KMnO}_4 $ being strong oxidising agent will oxidise $CI^-$ ion present in $\text{HCl}$ to form chlorine gas.
$2 \mathrm{KMnO}_4+16 \mathrm{HCl} \rightarrow 2 \mathrm{KCl}+2 \mathrm{MnCl}_2+8 \mathrm{H}_2 \mathrm{O}+5 \mathrm{Cl}_2$
$2 \mathrm{KMnO}_4+16 \mathrm{HCl} \rightarrow 2 \mathrm{KCl}+2 \mathrm{MnCl}_2+8 \mathrm{H}_2 \mathrm{O}+5 \mathrm{Cl}_2$
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