NEET Chemistry Activation Energy MCQ Question
Which of the following statements about activation energy is correct?
Activation energy is a constant for all reactions, regardless of temperature.
A higher activation energy generally results in a slower reaction rate at a given temperature.
Activation energy can be reduced by increasing the concentration of reactants.
The Arrhenius factor is unrelated to activation energy in the Arrhenius equation.
Correct Answer
Detailed Explanation
Statement B is correct because a higher activation energy means that fewer molecules have enough energy to overcome the energy barrier at a given temperature, leading to a slower reaction rate. Statement A is incorrect as activation energy varies for different reactions. Statement C is misleading since concentration affects reaction rates through collision frequency, not directly by altering activation energy. Statement D is false as the Arrhenius factor is an essential part of the equation that relates to activation energy.
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