Glucose is converted to ethanol and CO₂ by yeasts during fermentation according to the reaction: C₆H₁₂O₆ → 2 C₂H₅OH + 2 CO₂. Calculate the standard enthalpy change in kJ/mol for the above reaction at 298 K. Consider that ΔHf° is -1274 kJ/mol for glucose, -393 kJ/mol for CO₂, and -278 kJ/mol for ethanol.