(Originais Teachy 2023) - Question Medium of Chemistry

When burning 1 mol of methane (CH4) at 25°C and 1 atm, the standard combustion enthalpy is -890.3 kJ/mol. Knowing that the formation enthalpy of methane is -74.8 kJ/mol, the formation enthalpy of carbon dioxide (CO2) is -393.5 kJ/mol, and the formation enthalpy of water vapor (H2O) is -241.8 kJ/mol, calculate the combustion enthalpy of methane at 25°C and 1 atm using the provided standard formation enthalpy data. Then, discuss the importance of knowing the combustion enthalpy for the development of more efficient and cleaner technologies in the context of the current environmental crisis and global energy challenges, including an analysis of the implications of exothermic and endothermic reactions in this scenario.