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A gaseous reactant A, undergoes parallel reaction producing simultaneously three products B, C and D as follows:

If the activation energies for formation of B, C and D are respectively E1, E2 and E3 then find the overall activation energy for the reaction system.

Option: 1

\mathrm{\frac{E_1 + E_2 + E_3}{3}}


Option: 2

\mathrm{\frac{k_1 E_1 + k_2 E_2 +k_3 E_3}{k_1 + k_2+ k_3}}


Option: 3

\mathrm{\frac{k_1 +k_2 + k_3}{3}}


Option: 4

\mathrm{\frac{k_1 E_1 + k_2 E_2 +k_3 E_3}{E_1 +E_2+ E_3}}


Answers (1)

best_answer

As we learnt,

Effective Activation Energy in parallel reactions

\mathrm{E_{a_{eff}}=\frac{k_1 E_1 + k_2 E_2 +k_3 E_3}{k_1 + k_2+ k_3}}

Hence, the correct answer is Option (2)

Posted by

jitender.kumar

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