Question

In Haber's process of ammonia manufacture:
$N_2\left(g\right)+3H_2\left(g\right)⟶2{NH}_3\left(g\right)$, $\Delta H_{{25}^{o}C}^o=-92.2kJ$

Molecules	$N_2\left(g\right)$	$H_2\left(g\right)$	${NH}_3\left(g\right)$
$C_{P}J{K}^{-1}{mol}^{-1}$	$29.1$	$28.8$	$35.1$

If $C_P$ is independent of temperature,then reaction at ${100}^{o}C$ compared to that of ${25}^{o}C$ will be:

• A. more endothermic
• B. less endothermic
• C. more exothermic
• D. less exothermic

Answer 1

The correct option is D less exothermic