19. Chemical Thermodynamics
Gibbs Free Energy
19. Chemical Thermodynamics Gibbs Free Energy
148PRACTICE PROBLEM
From the values given for ΔH° and ΔS°, calculate ΔG° for the following reaction at 298 K. If the reaction is not spontaneous under standard conditions at 298 K, at what temperature (if any) would the reaction become spontaneous?
2 PbS(s) + 3 O2(g) → PbO(s) + 2 SO2(g) ΔH ° = -844 kJ; ΔS° = -165 J/K
From the values given for ΔH° and ΔS°, calculate ΔG° for the following reaction at 298 K. If the reaction is not spontaneous under standard conditions at 298 K, at what temperature (if any) would the reaction become spontaneous?
2 PbS(s) + 3 O2(g) → PbO(s) + 2 SO2(g) ΔH ° = -844 kJ; ΔS° = -165 J/K