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 (ke ff) is given by (A) ke ff = k + kg (B) ke ff = (k+ kg )/2 (C) ke ff = (kkg ) 1/2 (D) 1/ke ff = 1/k + 1/kg

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 (ke
ff) is given by
(A) ke
ff = k + kg
(B) ke
ff = (k+ kg
)/2
(C) ke
ff = (kkg
)
1/2
(D) 1/ke
ff = 1/k + 1/kg
by

1 Answer

Answer :

(D) 1/ke
ff = 1/k + 1/kg
by

Related questions

In a vapor-liquid contacting equipment, the overall gas phase mass transfer co-efficient (M.T.C), KG is related to individual co-efficients (KG and KL ) as (A) KG = 1/KG + m/KL (B) 1/KG = 1/KG + m/KL (C) 1/KG = 1/KL + m/KG (D) KG = 1/KL + m/KG

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