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12th West Bengal Board
IMPORTANT
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The value of rate constant of a pseudo first order reaction

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Important Questions on Chemical Kinetics

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12th West Bengal Board
IMPORTANT
NEW SYSTEMATIC MODERN CHEMISTRY>Chapter 4 - Chemical Kinetics>REVIEW EXERCISES>Q 42
Consider the reaction A⇌B. The concentration of both the reactants and the products varies exponentially with time. Which of the following figures correctly describes the change in the concentration of the reactants and the products with time?
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12th West Bengal Board
IMPORTANT
NEW SYSTEMATIC MODERN CHEMISTRY>Chapter 4 - Chemical Kinetics>REVIEW EXERCISES>Q 43
Rate constant of a first order reaction is :
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12th West Bengal Board
IMPORTANT
NEW SYSTEMATIC MODERN CHEMISTRY>Chapter 4 - Chemical Kinetics>REVIEW EXERCISES>Q 44
The minimum energy necessary to permit a reaction to occur is:
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12th West Bengal Board
IMPORTANT
NEW SYSTEMATIC MODERN CHEMISTRY>Chapter 4 - Chemical Kinetics>REVIEW EXERCISES>Q 45
If the half-life time for a particular reaction is found to be constant and independent of the initial concentration of the reactants, then reaction is of
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12th West Bengal Board
IMPORTANT
NEW SYSTEMATIC MODERN CHEMISTRY>Chapter 4 - Chemical Kinetics>REVIEW EXERCISES>Q 46
The rate constant of a reaction varies :
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12th West Bengal Board
IMPORTANT
NEW SYSTEMATIC MODERN CHEMISTRY>Chapter 4 - Chemical Kinetics>REVIEW EXERCISES>Q 47
A quantitative relationship between the temperature and rate constant is given by :
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12th West Bengal Board
IMPORTANT
NEW SYSTEMATIC MODERN CHEMISTRY>Chapter 4 - Chemical Kinetics>REVIEW EXERCISES>Q 48
The reaction between X and Y is first order with respect to X and second order with respect to Y. If the concentration of X is halved and the concentration of Y is doubled, the rate of reaction will be:
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12th West Bengal Board
IMPORTANT
NEW SYSTEMATIC MODERN CHEMISTRY>Chapter 4 - Chemical Kinetics>REVIEW EXERCISES>Q 49
75% of a first order reaction was completed in 32 minutes. When was 50% of the reaction completed?