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How can you prepare Cl2 from HCl and HCI from Cl2? Write reactions only.

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How can you prepare Cl2 from HCl and HCI from Cl2? Write reactions only.

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(i) Oxidation of hydrogen chloride gas by atmospheric oxygen in the presence of CuCl2 catalyst at 723 K (Deacons’s process).

4HCl + O2 → 2Cl2 + 2H2O

(ii) H2 + Cl2 \(\overset{hv}{\longrightarrow}\) 2HCl

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