1.

Which of the following is used in the preparation of chlorine?A. only `MnO_(2)`B. only `KMnO_(4)`C. Both `MnO_(2)` and `KMnO_(4)`D. Either `MnO_(2)` and `KMnO_(4)`

Answer» Correct Answer - 3
Cholrine can be prepared by heating concentratied hydrocholric acid with an oxidising agent such manganese dioxide, potassium permanganate, etc.
`{:(MnO_(2)+2HCl rarr MnCl_(2)+H_(2)O+O),(2HCl+O rarr Cl_(2)+H_(2)O),(bar(MnO_(2)+4HCl rarr MnCl_(2)+H_(2)O+Cl_(2))),(2KMnO_(4)+16HCl rarr 2KCl+2MnCl_(2)+8 H_(2)O+5 Cl_(2)):}`


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