Chemical Reaction Engineering The reason why a catalyst increases the rate of reaction is that, it Increases the activation energy None of these Decreases the molecular collision diameter Decreases the energy barrier for reaction Increases the activation energy None of these Decreases the molecular collision diameter Decreases the energy barrier for reaction ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering A first order reaction requires two equal sized CSTR. The conversion is More when they are connected in series Same whether they are connected in series or in parallel More when they are connected in parallel Less when they are connected in series More when they are connected in series Same whether they are connected in series or in parallel More when they are connected in parallel Less when they are connected in series ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering The rate constant of a chemical reaction increases by 100 times when the temperature is increased from 400 °K to 500 °K. Assuming transition state theory is valid, the value of E/R is 9210°K 8987°K 8621°K 8764°K 9210°K 8987°K 8621°K 8764°K ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering Equilibrium of a chemical reaction as viewed by kinetics is a __________ state. Dynamic steady None of these Dynamic unsteady Static steady Dynamic steady None of these Dynamic unsteady Static steady ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering A catalyst in a chemical reaction __________ free energy change in the reaction. Neither A nor B Decreases Either A or B; depends on the type of catalyst Increases Neither A nor B Decreases Either A or B; depends on the type of catalyst Increases ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering For a heterogenous catalytic reaction, A + B → C, with equimole feed of A and B, the initial rate - rA0 is invariant with total pressure. The rate controlling step is Surface reaction between A in the gas phase and absorbed B Surface reaction between absorbed A and absorbed B Surface Kc/(1 + TS) reaction between absorbed A and B in the gas phase Desorption of C Surface reaction between A in the gas phase and absorbed B Surface reaction between absorbed A and absorbed B Surface Kc/(1 + TS) reaction between absorbed A and B in the gas phase Desorption of C ANSWER DOWNLOAD EXAMIANS APP
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