Question

When the activation energies of the forward and reverse reactions are equal, then

• A. $\Delta U =0, \Delta S =0 $
• B. $\Delta U =\infty, \Delta S =0 $
• C. $\Delta G =0, \Delta U =0 $
• D. only $\, \Delta U = 0$

Answer 1

Answer: (D)

$A \rightleftharpoons B$ The energy of reactant and product becomes equal when the activation energies of the forward and back ward reactions are equal. Thus $\triangle E = E _{ A }- E _{ B }=0$.