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The molecularity of the reaction A+2B → R, (-rA) = k CACB^2 is ____

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The molecularity of the reaction A+2B → R, (-rA) = k CACB^2 is ____

(a) 2

(b) 1

(c) 3

(d) 0

I got this question by my school principal while I was bunking the class.

My question comes from Reaction Rates topic in chapter Basic Concepts of Chemical Reaction Engineering

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Correct answer is (c) 3

Explanation: In the reaction A+2B → R, 1 molecule of A and 2 molecules of B react. Hence, molecularity = 3.

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