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(i) Hydrolysis of ester increases with time due to auto catalytic action of CH 3 COOH formed. (ii) Decolorisation of KMnO 4 by oxalic acid becomes fast due to auto catalytic action of Mn 2+ .

Chemical Kinetics

Question

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Give two examples of a reaction whose rate increases with the progress of the reaction.

Answer

(i) Hydrolysis of ester increases with time due to auto catalytic action of CH₃ COOH formed.

(ii) Decolorisation of KMnO₄ by oxalic acid becomes fast due to auto catalytic action of Mn²⁺.