What is the molar heat capacity of liquid water in equilibrium with solid ice at constant atmospheri — Thermodynamics and Thermochemistry Chemistry Question

💡 Solution & Explanation

Molar heat capacity $C_p$ is defined as $C_p = \frac{\Delta H}{\Delta T}$. During a phase transition (like water in equilibrium with ice at $0^\circ \text{C}$), latent heat is absorbed or released to change the phase, but the temperature of the system remains strictly constant. Because $\Delta T = 0$, the mathematical limit of $C_p = \frac{\Delta H}{0}$ approaches infinity.