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Statements about the Arrhenius equation and activation energy

This type of question, asked 4 times: 24 Jan 2023, 8 Apr 2023, 3 Apr 2025, 22 Jan 2026 S2. All 4 questions below, oldest first.

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  1. Question 1

    24 Jan 2023

    52
    The number of correct statement/s from the following is A. Larger the activation energy, smaller is the value of the rate constant. B. The higher is the activation energy, higher is the value of the temperature coefficient. C. At lower temperatures, increase in temperature causes more change in the value of kk than at higher temperature D. A plot of ln⁡k\ln k vs 1T\frac{1}{T} is a straight line with slope equal to −EaR-\frac{E_{a}}{R}

  2. Question 2

    8 Apr 2023

    54
    The number of given statement/s which is/are correct is__ (A) The stronger the temperature dependence of the rate constant, the higher is the activation energy. (B) If a reaction has zero activation energy, its rate is independent of temperature. (C) The stronger the temperature dependence of the rate constant, the smaller is the activation energy. (D) If there is no correlation between the temperature and the rate constant then it means that the reaction has negative activation energy.

  3. Question 3

    3 Apr 2025

    120
    Consider the following statements related to temperature dependence of rate constants. Identify the correct statements, A. The Arrhenius equation holds true only for an elementary homogenous reaction. B. The unit of A is same as that of k in Arrhenius equation. C. At a given temperature, a low activation energy means a fast reaction. D. A and Ea as used in Arrhenius equation depend on temperature. E. When Ea >> RT. A and Ea become interdependent. Choose the correct answer from the options given below :

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  4. Question 4

    22 Jan 2026 S2

    32
    Correct statements regarding Arrhenius equation among the following are : (A) Factor e−Ea/RTe^{- Ea/RT} corresponds to fraction of molecules having kinetic energy less than Ea. (B) At a given temperature, lower the Ea, faster is the reaction. (C) Increase in temperature by about 10∘C10^{\circ}C doubles the rate of reaction. (D) Plot of log⁡k\log k vs 1 T\frac{1}{\text{ }T} gives a straight line with slope =−EaR= - \frac{Ea}{R}. Choose the correct answer from the options given below:

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