Question 24

CHNAT1 markNeeds review
The decomposition of acetaldehyde (X) to methane and carbon monoxide follows four-step free radical mechanism. The overall rate of decomposition of X is

where,

,

, and

denote the rate constants of the elementary steps, with corresponding activation energies (in kJ mol⁻¹) of 320, 40, and 0, respectively. The temperature dependency of the rate constants is described by Arrhenius equation.

denotes the concentration of acetaldehyde. The rate constant for the overall reaction is

. The activation energy for the overall reaction (in kJ mol⁻¹) is ________ (round off to nearest integer).

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2020CH

GATE CH 2020 · Paper 1

Chemical Engineering · Original paper archive

Section
Chemical Engineering
Question type
Numerical answer (NAT)
Marks
1 mark

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