Solution V: solution II + large excess of water. — Thermodynamics and Thermochemistry Chemistry Question

💡 Solution & Explanation

Solution II contains 10 moles of water. Adding a large excess takes the state to $n \to \infty$. Enthalpy of dilution $= \Delta H_\infty - \Delta H_{10} = -75.0\text{ kJ} - (-63.56\text{ kJ}) = -11.44\text{ kJ}$.