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Elements of Groups 16, 17 and 18 — Chemistry STD 12 Science — Question

Maharashtra BoardEnglish MediumSTD 12 ScienceChemistryElements of Groups 16, 17 and 182 Marks
Question
How is chlorine obtained from HCl?
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Answer

Chlorine is obtained by the oxidation of hydrochloric acid by various oxidising agents:
(i) $MnO _2+4 HCl \xrightarrow{\Delta} MnCl _2+2 H _2 O + Cl _2$
Manganese dioxide
$\begin{aligned} & \text { (ii) } 2 KMnO _4+16 HCl \longrightarrow \\ & \underset{\text { permanganate }}{\text { Potassium }} \quad 2 KCl +2 MnCl _2+8 H _2 O +5 Cl _2 \\ & \end{aligned}$

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