The rate constant of a reaction at temperature 200 K is 10 times less than the rate constant at 400 K. What is the activation energy `(E_(a))` of the reaction ? (R = gas constant)

The rate constant of a reaction at 200K is 10 times less than rate constant at 400K. Value of E_a ? [R = gas constant]

The rate of a reaction at 200 K is 10 times less than the rate of the reaction at 400 K. Calculate activation energy of the reaction.

The rate of a reaction at 400 K is 10 times than the rate of the reaction at 200 K . Calculate activation energy of the reaction.

The rate constant of a reaction is doubled when the temperature is raised from 298 K to 308 K. Calculate the activation energy.

The rate constant for a first order reaction becomes six times when the temperature is raised from 350 K to 400 K. Calculate activation energy for the reaction.

The rate constant of a reaction increases four times when the temperature changes from 300 K to 320 K, Calculate the activation energy for the reaction. (R = 8.314 Jmol ^(-1) K ^(-1))