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NEET UG CHEMISTRY MCQ: THERMODYNAMICS
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The enthalpies of combustion of carbon and carbon monoxide at 298 K and constant pressure are –393.5 kJ/mol. and –283.0 kJ/mol. respectively. The heat of formation of carbon monoxide at constant volume will be
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Correct option: B
–111.7 kJ/mol.
Option B (–111.7 kJ/mol) is correct because it is calculated using Hess's law and accounting for the change in the number of moles of gas.
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