Home
Class 12
CHEMISTRY
An organic reaction is carried out at 50...

An organic reaction is carried out at 500 K. If the same reaction carried out in the presence of a catalyst at the same rate, the temperature required is 400 K. What is the activation energy of the uncatalysed reaction if catalyst lowers the Ea by 20 kJ/mol?

A

100 kJ/mol

B

80 kJ/mol

C

60 kJ/mol

D

none of these

Text Solution

Verified by Experts

The correct Answer is:
B
Promotional Banner

Similar Questions

Explore conceptually related problems

A hydrogenation reaction is carried out at 500 K . If the same reaction is carried out in the presence of a catalyst at the same rate, the temperature required is 400 K . Calculate the activation energy of the reaction if the catalyst lowers the activation barrier by 20 kJ mol^(-1) .

A reaction is carried out at 600 K . If the same reaction is carried out in the presence of catalyst at the same rate and same frequency factor, the temperature required is 500 K . What is the activation energy of the reaction, if the catalyst lowers the activation energy barrier by 20 KJ//mol ?

Rate of a reaction increases by 10^6 times when a reaction is carried out in presence of enzyme catalyst at same temperature. Determine change in activation energy.

How do temperature and the presence of a catalyst bring about an increase in the rate of a reaction ?

The rate of a reaction becomes 4 times when temperature is raised from 293 K to 313 K. The activation energy for such reaction would be

In a reaction carried out at 400K, 0.01% of the total number of collisions is effective. The energy of activation of the reaction is

In a reaction carried out at 500 K, 0.001% of the total number of colliisons are effective. The energy of activation of the reaction is approximately

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)

Assertion: A catalyst increases the rate of a reaction. Reason: In presence of a catalyst, the activation energy of the reaction decreases.

The rates of most reaction double when their temperature is raised from 298K to 308K . Calculate their activation energy.