The reaction 2   A + B 2 → 2 AB is an elementary reaction. For a certain quantity of reactants,…

The reaction 2 A+B22AB is an elementary reaction.

For a certain quantity of reactants, if the volume of the reaction vessel is reduced by a factor of 3, the rate of the reaction increases by a factor of _____ . (Round off to the Nearest Integer).

Solution

Reaction : 2 A+B22AB

As the reaction is elementary, the rate of reaction is

r=K.[A]2 B2

on reducing the volume by a factor of 3, the concentrations of A and B2 will become 3 times and hence, the rate becomes 32×3=27 times of initial rate.

Asked in: JEE Main 2021 (17 Mar Shift 2)

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