D-And F-Block Elements Ques 489

Question: When $ KMnO_4 $ is added to oxalic acid, the decolourisation is slow in the beginning but becomes instantaneous after sometime because

Options:

A) $ M{{n}^{2+}} $ acts as autocatalyst.

B) $ CO_2 $ is formed as the product.

C) Reaction is exothermic.

D) $ MnO_4^{-} $ catalyses the reaction.

Show Answer

Answer:

Correct Answer: A

Solution:

Little bit acid is required for reaction
$ \therefore M{{n}^{2+}} $ acts as autocatalyst.



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