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कर्नाटक बोर्ड पी.यू.सी.पीयूसी विज्ञान 2nd PUC Class 12

Why is HCl not used to make the medium acidic in oxidation reactions of KMnOX4 in acidic medium?

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प्रश्न

Why is \[\ce{HCl}\] not used to make the medium acidic in oxidation reactions of \[\ce{KMnO4}\] in acidic medium?

पर्याय

  • Both \[\ce{HCl}\] and \[\ce{KMnO4}\] act as oxidising agents.

  • \[\ce{KMnO4}\] oxidises \[\ce{HCl}\] into \[\ce{Cl2}\] which is also an oxidising agent.

  • \[\ce{KMnO4}\] is a weaker oxidising agent than \[\ce{HCl}\].

  • \[\ce{KMnO4}\] acts as a reducing agent in the presence of \[\ce{HCl}\].

MCQ
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उत्तर

\[\ce{KMnO4}\] oxidises \[\ce{HCl}\] into \[\ce{Cl2}\] which is also an oxidising agent.

Explanation:

\[\ce{HCl}\] is not used to make the medium acidic in oxidation reactions of \[\ce{KMnO4}\] in acidic medium. The reason is that if \[\ce{HCl}\] is used, the oxygen produced from \[\ce{KMnO4 + HCl}\] is partly utilized in oxidizing \[\ce{HCl}\] to \[\ce{Cl}\], which itself acts as an oxidizing agent and partly oxidises the reducing agent.

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पाठ 8: The d-and f-Block Elements - Multiple Choice Questions (Type - I) [पृष्ठ १०९]

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एनसीईआरटी एक्झांप्लर Chemistry Exemplar [English] Class 12
पाठ 8 The d-and f-Block Elements
Multiple Choice Questions (Type - I) | Q 21 | पृष्ठ १०९

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