Question

Consider an endothermic reaction X Y with the activation energies Eb and Ef for the backward and forward reaction, respectively. In general

• A. $E_{b}\text{ < }\text{E}_{f}$
• B. $\Delta\text{ H = }\Delta U$
• C. $\Delta\text{ H } < \text{ }\Delta U$
• D. $\Delta\text{ H } > \text{ }\Delta U$

Answer 1

Answer: (A)

$E_{b}\text{ < }\text{E}_{f}$

Answer 2

For endothermic reaction, $\Delta\text{H = ve}\Delta\text{H = }\text{E}_{f}\text{ - }\text{E}_{b},$ it

means $E_{b}\text{ < }\text{E}_{f}.$