In the presence of a catalyst, the activation energy is lowered by 3 Kcal at `27^(@)`c .Hence the rate of reaction will increase by :

In presence of a catalyst, the activation energy is lowered by 3 kcal at 27^@C . Hence, the rate of reaction will increase by:

In the presence of catalyst, the activation energy of the reaction is lowered by 2 kcal at 27^(@)C . The rate of reaction will increased by

In presence of a catalyst, the activation energy is lowered by "2" kcal at \(127^{o}\)C .Hence, the rate as compared to the old rate is \(e^{x}\) times. then the value of "x" is

For a given reaction, presence of catalyst reduces the energy of activation by 2 kcal at 27^(@)C . Thus rate of reaction will be increased by:

The activation energy of a first order reaction at 300 K is kJ mol^(-1) . In the presence of a catalyst, the activation energy gets lowered to 50kJ mol^(-1) at 300 K . How many times the reaction rate change in the presence of a catalyst at the same temperature ?