TS EAMCET · Chemistry · Thermodynamics (C)
Which one of the following is true for an exothermic reaction \(A \rightleftharpoons B\), if \(E_f\) and \(E_b\) are the activation energies of forward and backward reactions respectively?
- A \(E_f>E_b\)
- B \(E_f=E_b\)
- C \(E_f=-E_b\)
- D \(E_f < E_b\)
Answer & Solution
Correct Answer
(D) \(E_f < E_b\)
Step-by-step Solution
Detailed explanation
Activation energy for the forward reaction, \(E_f\) and the activation energy for the backward reaction, \(E_b\) are related to the enthalpy of the reaction by the equation. \(\Delta_r H=E_f-E_b\) For exothermic reaction \(\begin{aligned} \Delta_r H & E_f \end{aligned}\)
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