Chemistry

Chemistry

Problem

A reaction occurs in three rate determining steps having rate constants K1,K2K_1, K_2 and K3K_3 respectively and Arrhenius factor A1,A2,A3A_1, A_2, A_3 respectively. The overall rate constant K=K1K2K3K = \frac{K_1 K_2}{K_3}. If energy of activations for each step is Ea1,Ea2E_{a_1}, E_{a_2} and Ea3E_{a_3} respectively, then overall energy of activation is : a. Ea1+Ea2+Ea3E_{a_1} + E_{a_2} + E_{a_3} b. Ea1×Ea2Ea3\frac{E_{a_1} \times E_{a_2}}{E_{a_3}} c. Ea1+Ea2−Ea3E_{a_1} + E_{a_2} - E_{a_3} d. K3[Ea1K2+Ea2K1+K3Ea3K1K2]K_3 \left[ \frac{E_{a_1}}{K_2} + \frac{E_{a_2}}{K_1} + \frac{K_3 E_{a_3}}{K_1 K_2} \right]

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