Which reaction is exothermic?

CH4 + 2O2 - - >CO2 + 2H2O + 891 kJ

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

2H2O + 286 kJ - - > 2H2 + O2

N2 + O2 + 181 kJ-->2NO

Question

18 August, 06:54

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Answers (2)

Know the Answer?

Emilie Benitez · Answer 1

CH4 + 2O2 CO2 + 2H2O + 891 kJ I is the correct answer based on my research.

Dallas Martin · Answer 2

The answer is CH4 + 2O2 CO2 + 2H2O + 891 kJ I just took the pre-test where this was asked.

Which reaction is exothermic?CH4 + 2O2 - - >CO2 + 2H2O + 891 kJNH4NO3 + H2O + 25 kJ - - > NH4 + (aq) + NO3 - (aq)2H2O + 286 kJ - - > 2H2 + O2N2 + O2 + 181 kJ-->2NO