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MHT CET Chemistry question

ChemistryThermodynamicsMHT CET

The enthalpies of combustion of carbon and carbon monoxide are -390 kJ and -278 kJ respectively. The enthalpy formation of carbon monoxide is

Answer: (D)

Solution

Subtracting CO + O CO (-278) from C + O CO (-390) gives C + O

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Question ID VK-064276