Chemistry - Thermochemistry Question with Solution | TestHub

P - 1, 2: Carbon (graphite) reacting with oxygen to form 1 mole of CO₂ represents both the enthalpy of combustion of carbon and the enthalpy of formation of CO₂

Q - 2, 3, 4: The conversion of solid graphite to gaseous carbon atoms represents both the enthalpy of sublimation and the enthalpy of atomization.

R - 1: The reaction of CO (g) with oxygen to form CO₂ is the enthalpy of combustion of carbon monoxide.

S - 3: Breaking 1 mole of gaseous methane into its constituent gaseous atoms is defined as the enthalpy of atomization.