ChemistryEnergy changesJAMB
In a reaction, 1000 kJ is absorbed in breaking bonds and 1200 kJ is released in forming bonds. Find ΔH.
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Answer: C. −200 kJ
ΔH = energy in − energy out = 1000 − 1200 = −200 kJ (exothermic).
An AdmitMe practice question, written for the JAMB syllabus. Not an official past question.