NaI undergoes a solid → liquid phase transition at 661°C.

The heat energy q_rev required for the phase transition at this temperature is 44.3 kJ.mol^-1.

Determine the associated entropy change ΔS for this transition.

Question

NaI undergoes a solid → liquid phase transition at 661°C.

The heat energy q_rev required for the phase transition at this temperature is 44.3 kJ.mol^-1.

Determine the associated entropy change ΔS for this transition.

| General Chemistry 3

Accepted Answer

ΔS = $\frac{q_{rev}}{T}$

ΔS = $\frac{44.3 \times 10^{3}}{661 + 273}$

ΔS = 47.4 J.mol^-1.K^-1

Final - Question 5 | General Chemistry 3