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 keff = (kkg)1/2 keff = (k+ kg)/2 1/keff = 1/k + 1/kg keff = k + kg keff = (kkg)1/2 keff = (k+ kg)/2 1/keff = 1/k + 1/kg ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering If helium is introduced in a reactor containing O₂, SO₂ and SO₃ at equilibrium, so that total pressure increases while volume and temperature remains constant. In this case the dissociation of SO₃ (as per Le Chatlier principle) Decreases Remains unaltered Changes unpredictably Increases Decreases Remains unaltered Changes unpredictably Increases ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering The experimentally determined overall order of the reaction, A + B → C + D, is two. Then the Reaction is elementary but the molecularity may not be 2 Molecularity of the reaction is 2, but the reaction may not be elementary Reaction is elementary with a molecularity of 2 Reaction may be elementary with molecularity of 2 Reaction is elementary but the molecularity may not be 2 Molecularity of the reaction is 2, but the reaction may not be elementary Reaction is elementary with a molecularity of 2 Reaction may be elementary with molecularity of 2 ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering The equilibrium constant K of a chemical reaction depends on Temperature only Temperature and pressure Ratio of reactants Pressure only Temperature only Temperature and pressure Ratio of reactants Pressure only ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering If the rate of a chemical reaction becomes slower at a given temperature, then the Free energy of activation is higher Entropy changes Initial concentration of the reactants remains constant Free energy of activation is lower Free energy of activation is higher Entropy changes Initial concentration of the reactants remains constant Free energy of activation is lower ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering Which of the following fixes the volume of a batch reactor for a particular conversion and production rate? Density of mixture Operating conditions (e.g. pressure and temperature) Rate constant None of these Density of mixture Operating conditions (e.g. pressure and temperature) Rate constant None of these ANSWER DOWNLOAD EXAMIANS APP
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