Question

Molar heat capacity of water in equilibrium with ice at constant pressure is

• A. Zero
• B. Infinity $\left(\infty \right)$
• C. $40.45kJ{K}^{-1}mo{l}^{-1}$
• D. $75.48kJ{K}^{-1}mo{l}^{-1}$

Answer 1

Answer: (B)

By definition $C_{p,m}=\frac{d{q}_p}{dT}$
For $H_{2}O\left(l\right)$
Temperature does not change if some heat is given to the system. Hence
$C_{p,m}=\frac{+ve}{zero}=\infty$