Chemical Reaction Engineering
The rate constant of a reaction depends on the

Time of reaction
Extent of reaction
Temperature of the system
Initial concentration of reactants

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Chemical Reaction Engineering
The reaction rate almost gets doubled for 10°C rise in temperature. This is due to the fact that the

Increased temperature reduces the activation energy
Collision frequency increases
Value of threshold energy decreases
Fraction of molecules having threshold energy increases

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Chemical Reaction Engineering
For a heterogenous catalytic reaction, A + B → C, with equimole feed of A and B, the initial rate - rA0 is invariant with total pressure. The rate controlling step is

Surface reaction between absorbed A and absorbed B
Surface reaction between A in the gas phase and absorbed B
Desorption of C
Surface Kc/(1 + TS) reaction between absorbed A and B in the gas phase

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