For a reaction A arrow B, the average energies of A and B are 30 and 60 kcal / mol respectively. Energy of the activation for the backward reaction is 93 kcal / mol. The energy of activation for the forward reaction is

Question

For a reaction A arrow B, the average energies of A and B are 30 and 60 kcal / mol respectively. Energy of the activation for the backward reaction is 93 kcal / mol. The energy of activation for the forward reaction is (A) 30 kcal / mol (B) 123 kcal / mol (C) 153 kcal / mol (D) 90 kcal / mol

Tardigrade Admin · Accepted Answer

Activation energy is the energy that must be provided to compound to result in a chemical reaction.
Given, for the reaction

A \to B

.

E_{b}

or average energy of

(A) = 30 k c a l / m o l

Average energy of

(B) = 60 k c a l / m o l

and energy of activation for backward reaction

= 93 k c a l / m o l (H_{f})

Also,

∵ H_{f} = E_{a} (f) - E_{b}

∴ E_{a} (f) = H_{f} + E_{b} = 93 + 30 = 123 k c a l / m o l

Q. For a reaction A→B, the average energies of A and B are 30 and 60kcal/mol respectively. Energy of the activation for the backward reaction is 93kcal/mol. The energy of activation for the forward reaction is

30 kcal / mol

123 kcal / mol

153 kcal / mol

90 kcal / mol

Q. For a reaction $A \to B$ , the average energies of $A$ and $B$ are $30$ and $60 k c a l / m o l$ respectively. Energy of the activation for the backward reaction is $93 k c a l / m o l$ . The energy of activation for the forward reaction is