Standard molar enthalpy of formation of is equal to — Thermodynamics and Thermochemistry Chemistry Question

💡 Solution & Explanation

By definition, the formation reaction for $\text{CO}_2$ is $\text{C(graphite)} + \text{O}_2\text{(g)} \to \text{CO}_2\text{(g)}$, which concurrently defines the complete combustion reaction of carbon in its standard state (graphite).