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Vedmedyk [2.9K]
3 years ago
12

Which reaction is exothermic? CH4 + 2O2 Right arrow. CO2 + 2H2O + 891 kJ NH4NO3 + H2O + 25 kJ Right arrow. NH4+(aq) + NO3-(aq) 2

H2O + 286 kJ Right arrow. 2H2 + O2 N2 + O2 + 181 kJ Right arrow. 2NO
Chemistry
1 answer:
Troyanec [42]3 years ago
6 0

Answer:

ch4 + 2o2 gives co2+2h2o +891kj

Explanation:

becoz 891kj heat energy is given out

exothermic process means heat energy is given out/ released

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