If the enthalpy change for the reaction H₂ + Cl₂ → 2HCl is −185.5 kJ, what is the enthalpy change for the reaction 2H₂ + 2Cl₂ → 4HCl?
University of Ilorin CHM101 2026-test past question
- −92.75 kJ
- −185.5 kJ
- +371 kJ
- −371 kJ
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