The activation energy for a simple chemical r | vedclass

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

Question

(D) The relationship between the activation energy of the forward reaction $(E_{a,f})$ and the reverse reaction $(E_{a,r})$ is given by the equation:

Vedclass · Accepted Answer

Can be less than or more than ${E_a}$

Vedclass · Answer

(D) The relationship between the activation energy of the forward reaction $(E_{a,f})$ and the reverse reaction $(E_{a,r})$ is given by the equation: $E_{a,f} - E_{a,r} = \Delta H$,where $\Delta H$ is the enthalpy change of the reaction.For an exothermic reaction,$\Delta H  E_{a,f}$.For an endothermic reaction,$\Delta H > 0$,which implies $E_{a,r} Therefore,the activation energy for the reverse reaction can be less than or more than ${E_a}$ depending on the nature of the reaction.

The activation energy for a simple chemical reaction $A \to B$ is ${E_a}$ in the forward direction. The activation energy for the reverse reaction:

Similar Questions

Fill in the blanks:
$(a)$ $A$ catalyst ......... the change of equilibrium in reaction.
$(b)$ Boltzmann and Maxwell used ......... to explain the rate of reaction.

For the equilibrium $A_{(g)} \rightleftharpoons B_{(g)}$,$\Delta H$ is $-40 \ kJ/mol$. If the ratio of the activation energies of the forward $(E_f)$ and reverse $(E_b)$ reactions is $\frac{2}{3}$,then:

The value of the rate constant for the reaction $A + B \to \text{products}$ depends on:

Assertion : If the activation energy of a reaction is zero,temperature will have no effect on the rate constant.
Reason : Lower the activation energy,faster is the reaction.

Explain the collision theory of chemical reactions.

Vedclass Test Series

Exam Paper Generator

Online Exam Module