GKFix MCQ Question

What is the enthalpy change for the reaction: H₂(g) + ½ O₂(g) → H₂O(l), if the reaction is multiplied by 3?

• A. +857.49 kJ mol⁻¹
• B. –857.49 kJ mol⁻¹
• C. +571.66 kJ mol⁻¹
• D. –571.66 kJ mol⁻¹