The activation energy for a simple chemical reaction, $A \to B$ is $E_{a}$ in forward direction. The activation energy for reverse reaction.
[CBSE AIPMT 2003]

Can be less than or more than

E_{a}

Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses

Is always double of

E_{a}

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Is negative of

E_{a}

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Is always less than

E_{a}

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Open in App

Solution

The correct option is A Can be less than or more than $E_{a}$
The energy of activation of reverse reaction is less than or more than energy of activation $(E_{a})$ of forward reaction.
$∴ Δ H = (E_{a})_{F} - (E_{a})_{R}$
Because it depends upon the nature of reaction.
If $(E_{a})_{F} > (E_{a})_{R}$ , reaction is endothermic
or $(E_{a})_{F} < (E_{a})_{R}$ , reaction is exothermic

Suggest Corrections

Similar questions

Q. The activation energy for a simple chemical reaction,

A \to B

E_{a}

in forward direction. The activation energy for the reverse reaction:

Q. The activation energy for a simple chemical reaction

A \to B i s E_{a}

in the forward reaction. The activation energy of the reverse reaction:

For an endothermic reaction, energy of activation is $E_{a}$ and enthalpy of reaction is $Δ H$ (both of these in kJ/mol). Minimum value of $E_{a}$ will be:

Q. Assertion :The activation energy for an uncatalysed reaction is less than for a catalysed reaction Reason: Negative catalyst increases the activation energy

Q. If the reactants are at a higher energy level than products, the reaction is exothermic. The activation energy of a forward reaction is less than that of the backward reaction. That means, the energy required for breaking of bonds is less than the energy released during formation of bonds. In case of an endothermic reaction, the activation energy of the forward reaction is more than that of backward reaction.

The activation energy for a simple chemical reaction, A→B is Ea in forward direction. The activation energy for reverse reaction. [CBSE AIPMT 2003]

The activation energy for a simple chemical reaction, $A \to B$ is $E_{a}$ in forward direction. The activation energy for reverse reaction.
[CBSE AIPMT 2003]