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(D) Chlorine is prepared by the oxidation of hydrochloric acid $(HCl)$ using oxidizing agents. Common laboratory methods include: $1$. $MnO_2 + 4HCl \

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$MnO_2$ or $KMnO_4$

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(D) Chlorine is prepared by the oxidation of hydrochloric acid $(HCl)$ using oxidizing agents. Common laboratory methods include: $1$. $MnO_2 + 4HCl \rightarrow MnCl_2 + Cl_2 + 2H_2O$ $2$. $2KMnO_4 + 16HCl \rightarrow 2KCl + 2MnCl_2 + 8H_2O + 5Cl_2$ Both $MnO_2$ and $KMnO_4$ are effective oxidizing agents used to produce chlorine gas from $HCl$.

Which of the following is useful in the preparation of chlorine?

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