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Why is not used to make the medium acidic in oxidation reactions of
in an acidic medium?
(i) Both and
act as oxidising agents.
(ii) oxidises
into
which is also an oxidising agent.
(iii) is a weaker oxidising agent than
.
(iv) acts as a reducing agent in the presence of
.
Answers (1)
The answer is the option (ii). is oxidised by
into
which is also an oxidising agent. Since hydrochloric acid is oxidised to chlorine, permanganate titrations in their presence are unsatisfactory.
View full answer
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