GKFix MCQ Question

What is the enthalpy change (∆H) for the reaction HCl.25 aq. + 15 aq. → HCl.40 aq.?

• A. +0.76 kJ/mol
• B. –0.76 kJ/mol
• C. –72.03 kJ/mol
• D. –72.79 kJ/mol