The activation energy of a certain uncatalysed reaction at 300K is `76kJmol^(-1)`. The activation energy is lowered to `57kJmol^(-1)` by the use of a catalyst. By what factor is the rate of the catalysed reaction increased?

The activation energy of a reaction is 75.2 KJ mol^-1 in the absence of a catalyst and 50.14 Kjmol^-1 with a catalyst. How many times will the rate of reaction grow in the presence of the catalyst if the reaction proceeds at 25^@C ? (R = 8.314 JK^-1mol^-1)

Higher the activation energy of a reaction slower is the rate of the reaction Explain.

What is activation energy? How is the activation energy affected by the use of catalyst and a rise in temperature?

An endothermnic reaction A rarr B has an activation energy 15kJ//mol and energy of reaction is 5kJ//mol . What is the activation energy for backward reaction B rarr A . Draw the required graph to describe the above energies.

The activation energy of a reaction 2H I_(g) rarrH_2 + I_(2(g)) is 209.5 kJ mol^-1 at 581K. Calculate the fraction of molecules of reactants having energy equal to or greater than activation energy?

The rate constant, the activation energy and the Arrhenius parameter of a chemical reaction at 25^@C are 3xx10^(-4)s^(-1),104.4kJmol^(-1) and 6xx10^(-14)s^(-1) respectively. The value of the rate constant at T rarr prop is

The value of rate constant is 1x10^-2 mol^-1 LS^-1. What is the order of the reaction? How will the catalyst effect the value of K?

In general it is observed that the rate of a chemical reaction doubles with every 10^@ rise in temperature. If the generalisation holds for a reaction in the temperature range 295K to 305K, what would be the value of activation energy for the reaction?

A certain reaction is 50% complete in 20 minutes at 300K and the same reaction is again 50% complete in 5 mins at 350K. Calculate the activation energy if the reaction is of first order.

The decomposition of A into product has value of K at 4.5xx10^3s^-1 at 10^@C and energy of activation 60KJmol^-1 . At what temperature would K be 1.5xx10^4s^-1 ?