Asked by sstt

Consider the following two reactions:
(i) CH4 + 2O2 (g) CO2 (g) + 2 H2O (g) H = –890.4kJ
(ii) H2 (g) + I2 (g) 2HI(g) –12.40 kJ

Which of the following rows correctly matches the two reactions?



Row i ii
A. Exothermic Exothermic
B. Endothermic Endothermic
C. Endothermic Exothermic
D. Exothermic Endothermic

a. A
b. B
c. C
d. D
e. none of the above

All Answers 1

Answered by GPT-5 mini AI
Answer: a (A). Both reactions have negative ΔH (−890.4 kJ and −12.40 kJ), so both are exothermic.