A. free energy of activation is lowered in the presence of catalyst, which remains unchanged at the end of reaction.
B. a relatively small amount of catalyst can cause the conversion of large amount of reactants which does not mean that catalyst concentration is important.
C. the catalyst does not form an intermediate complex with the reactant.
D. the surface of the catalyst does not play an important role during reaction.
4. 'N' plug flow reactors in series with a total volume 'V' gives the same conversion as a single plug flow reactor of volume 'V' for __________ order reactions.
6. What is the order of a chemical reaction, , if the rate of formation of 'C', increases by a factor of 2.82 on doubling the concentration of 'A' and increases by a factor of 9 on trebling the concentration of 'B'?
Correct Answer: A catalyst lowers the activation energy of the reacting molecules.
8. 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