Answers 25-26 KCS18 Chemistry IC HeatQuestion 4

4

QuizMultiple Choice

Heat

Question 4 • *25-26 KCS18 Chemistry IC

Which reaction is exothermic?

Answer

A

CH4 + 2O2 CO2 + 2H2O + 891 kJ

Option A

B

NH4NO3 + H2O + 25 kJ NH4+(aq) + NO3-(aq)

Option B

C

2H2O + 286 kJ 2H2 + O2

Option C

D

N2 + O2 + 181 kJ 2NO

Option D

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