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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
10 years ago

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

Vikash Kumar
36 Points
10 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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