The rate expression for a heterogeneous catalytic reaction is given by, - rA = K.KA PA(1 + KA.PA + KR.PR), where K is surface reaction rate constant and KA and KR are absorption equilibrium constants of A and R respectively. If KR PR >> (1 + KA PA), the apparent activation energy EA is equal to (given E is the activation energy for the reaction and ΔHR and ΔHA are the activation energies of adsorption of R and A) (A) E (B) E + ΔHA (C) E + ΔHA - ΔHR ) (D) ΔHA + ΔHR

The rate expression for a heterogeneous catalytic reaction is given by,
- rA = K.KA PA(1 + KA.PA + KR.PR), where K is surface reaction rate constant
and KA and KR are absorption equilibrium constants
of A and R respectively. If KR PR >> (1 + KA PA), the apparent activation
energy EA is equal to (given E is the activation energy for the reaction and
ΔHR and ΔHA are the activation energies of adsorption of R and A)
(A) E
(B) E + ΔHA
(C) E + ΔHA
- ΔHR
)
(D) ΔHA + ΔHR
by

1 Answer

Answer :

(C) E + ΔHA
- ΔHR
)
by

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