Home Chemistry Chemical Kinetics NCERT Examplar The value of rate constant of a pseudo first…
Chemistry Chemical Kinetics NCERT Examplar Single Correct MCQ
Published on: August 13, 2026

The value of rate constant of a pseudo first order reaction:

A
Depends on the concentration of reactants presents in small amount
B
Depends on the concentration of reactants present in excess
C
Is independent of the concentration of reactants
D
Depends only on temperature

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The correct answer is:
B

Pseudo first order reaction is a chemical reaction in which rate of reaction depends upon concentration of only one reactant (present in small amount) while concentration of another reactant (present in excess) has no effect on rate of reaction. e.g., hydrolysis of ethyl acetate in presence of excess of water.

where
Rate constant of pseudo order reaction depends on conc. of reactant present in excess.

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