19. Chemical Thermodynamics
Gibbs Free Energy
19. Chemical Thermodynamics Gibbs Free Energy
115PRACTICE PROBLEM
The chemical reaction that takes place at the anode of a Ni-Cd battery is:
Cd(s) + 2 OH−(aq) ⇌ Cd(OH)2(s) + 2 e−
Calculate the value of ΔG for this reaction at −15 °C assuming that the battery is discharged to a point where the hydroxide ion concentration has dropped to 0.025 M (ΔG° = −159.2 kJ/mol).
The chemical reaction that takes place at the anode of a Ni-Cd battery is:
Cd(s) + 2 OH−(aq) ⇌ Cd(OH)2(s) + 2 e−
Calculate the value of ΔG for this reaction at −15 °C assuming that the battery is discharged to a point where the hydroxide ion concentration has dropped to 0.025 M (ΔG° = −159.2 kJ/mol).