Q. Which of the following is an endothermic reaction?
A) $N_{2}(g) + 3H_{2}(g) - 92kJ \rightarrow 2NH_{3}(g)$
B) $N_{2}(g) + O_{2}(g) + 180.8\ kJ \rightarrow 2NO(g)$
C) $H_{2}(g) + Cl_{2}(g) \rightarrow 2HCl(g) + 184.6\ kJ$
D) $C(graphite) + 2H_{2}(g) \rightarrow CH_{4}(g) + 74.8\ kJ$
Explanation
(b)
Endothermic reactions are those in which heat energy is absorbed.
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.