The value of ΔG° at 100.0°C for the formation of calcium chloride from its constituent elements: Ca (s) + Cl₂ (g) → CaCl₂ (s)
Is __________ kJ/mol. At 25.0°C for this reaction, ΔH° is -795.8 kJ/mol, ΔG° is -748.1 kJ/mol, and ΔS° is -159.8 J/K.

Question

Quizplus · Accepted Answer

To find ΔG° at 100.0°C, use the equation ΔG° = ΔH° - TΔS°. Convert 100.0°C to Kelvin (373.15 K) and ΔS° to kJ (by dividing by 1000). ΔG° = -795.8 kJ/mol - 373.15 K * (-0.1598 kJ/K/mol) = -736.1 kJ/mol.

The Value of ΔG° at 100