The use of a catalyst causes the rate constant for the reaction R→P to increase by a factor of exactly 250 at 298 K. Which one of the following statements best describes the effect of the catalyst?

Assume that the rate constant for the reaction obeys the Arrhenius equation and that the Arrhenius pre-exponential factors are the same for both the catalyzed and uncatalyzed reactions.

The catalyst increases the activation energy by 13.7 kJ mol-1

The catalyst increases the activation energy by 6.43 kJ mol-1

The catalyst decreases the activation energy by 13.7 kJ mol-1

The catalyst decreases the activation energy by 6.43 kJ mol-1

The catalyst decreases the enthalpy change by 11.8 kJ mol-1

Question

The use of a catalyst causes the rate constant for the reaction R→P  to increase by a factor of exactly 250 at 298 K. Which one of the following statements best describes the effect of the catalyst? 
 
Assume that the rate constant for the reaction obeys the Arrhenius equation and that the Arrhenius pre-exponential factors are the same for both the catalyzed and uncatalyzed reactions. 
 



 


The catalyst increases the activation energy by 13.7 kJ mol-1

The catalyst increases the activation energy by 6.43 kJ mol-1

The catalyst decreases the activation energy by 13.7 kJ mol-1

The catalyst decreases the activation energy by 6.43 kJ mol-1

The catalyst decreases the enthalpy change by 11.8 kJ mol-1

		The catalyst increases the activation energy by 13.7 kJ mol^-1
		The catalyst increases the activation energy by 6.43 kJ mol^-1
		The catalyst decreases the activation energy by 13.7 kJ mol^-1
		The catalyst decreases the activation energy by 6.43 kJ mol^-1
		The catalyst decreases the enthalpy change by 11.8 kJ mol^-1

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