Chemical Reaction Engineering
A first order gaseous phase reaction is catalysed by a non-porous solid. The kinetic rate constant and the external mass transfer co-efficients are k and kg respectively. The effective rate constant (keff) is given by

keff = k + kg
1/keff = 1/k + 1/kg
keff = (kkg)1/2
keff = (k+ kg)/2

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Chemical Reaction Engineering
Which of the following will favour the reverse reaction in a chemical equilibrium reaction?

Removal of at least one of the products at regular interval
Increasing the concentration of one or more of the products
Increasing the concentration of one of the reactants
None of these

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