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)/2 keff = (kkg)1/2 1/keff = 1/k + 1/kg keff = k + kg keff = (k+ kg)/2 keff = (kkg)1/2 1/keff = 1/k + 1/kg keff = k + kg ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering Integral method for analysing the kinetic data is used When the data are scattered Both A and B For testing specific mechanisms with simple rate expressions None of these When the data are scattered Both A and B For testing specific mechanisms with simple rate expressions None of these ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering A back mix reactor is Same as ideal stirred tank reactor Same as plug flow reactor (PFR) Suitable for gas phase reactions Ideal at very low conversion Same as ideal stirred tank reactor Same as plug flow reactor (PFR) Suitable for gas phase reactions Ideal at very low conversion ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering Half life period of a chemical reaction is The time required to reduce the concentration of the reacting substance to half its initial value Half of the residence time of a reaction Half of the space time of a reaction None of these The time required to reduce the concentration of the reacting substance to half its initial value Half of the residence time of a reaction Half of the space time of a reaction None of these ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering Transition state theory relates the above quantities as K ∝ T1.5 K ∝ T.eE/RT K ∝ e-E/RT K ∝ √T K ∝ T1.5 K ∝ T.eE/RT K ∝ e-E/RT K ∝ √T ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering Rate of a chemical reaction is not influenced by the Catalyst Temperature Number of molecules of reactants taking part in a reaction Reactants concentration Catalyst Temperature Number of molecules of reactants taking part in a reaction Reactants concentration ANSWER DOWNLOAD EXAMIANS APP
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