Question:
Which of the following represents the fraction of molecules with energies equal to or greater than E$_a$?
Which of the following represents the fraction of molecules with energies equal to or greater than E$_a$?
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The term e$^{-E_a/RT}$ in the Arrhenius equation gives the fraction of molecules having energy ≥ activation energy.
Updated On: Jul 1, 2025
- $\dfrac{E_a}{RT}$
- e$^{-E_a/RT}$
- e$^{+E_a/RT}$
- $+\dfrac{E_a}{RT}$
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The Correct Option is B
Solution and Explanation
According to the Maxwell-Boltzmann distribution of molecular energies, the fraction of molecules that possess energy $\geq E_a$ is given by:
Fraction = e$^{-E_a/RT}$
This exponential term decreases with increasing activation energy and increases with increasing temperature.
Fraction = e$^{-E_a/RT}$
This exponential term decreases with increasing activation energy and increases with increasing temperature.
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