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what is the order of reaction in a cannizaro reaction

what is the order of reaction in a cannizaro reaction

Grade:12

2 Answers

rishabh
27 Points
8 years ago

since two aldehydes participate along with oh therefore the order of reaction is three 

Vikash Kumar
36 Points
8 years ago

overall the reaction is a third-order reaction. It is second order wrt aldehyde and first order wrt base:-

rate = k[RCHO]2[OH] 

however at very high base concentration a second path (k'') becomes important and it becomes second order wrt base:-

rate = k[RCHO]2[OH-] + k''[RCHO]2[OH-]

for exams generally consider the first argument i.e. it is a third order reaction

vikash kumar

Btech. IIT-Delhi

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