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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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