Tuesday, April 23, 2019

organic chemistry - Can in any case the faster step of the reaction be rate determining?


I found a sentence in book which states the reverse step of this reaction ( I forgot what was it!) has the faster step as rate determining .


Even Rate determining step-Wikipedia states:



In chemical kinetics, the rate (or velocity) of a reaction mechanism with several steps is "OFTEN" determined by the slowest step .



which I think 'OFTEN' means not 'everytime' so,


if faster step of the reaction is rate determining. Then why it is?




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