23. Chemistry of the Nonmetals
Boron Family Reactions
23. Chemistry of the Nonmetals Boron Family Reactions
1PRACTICE PROBLEM
The +1 oxidation state is the most stable state for Tl, but it is not as common for Ga. Calculate the standard potential and standard Gibbs free energy (in kJ) for the disproportionation reaction below to explain this phenomenon
3 M+(aq) → M3+ (aq) + 2 M (s) M = Ga or Tl
Is the reaction spontaneous for either Ga+ or Tl+? The relevant standard reduction potentials are listed below
Tl3+(aq) + 2 e-→ Tl+ (aq) E° = +1.25 V
Tl+(aq) + e-→ Tl (s) E° = -0.34 V
Ga3+(aq) + 2 e-→ Ga+ (aq) E° = -0.35 V
Ga+(aq) + e-→ Ga (s) E° = -0.20 V
The +1 oxidation state is the most stable state for Tl, but it is not as common for Ga. Calculate the standard potential and standard Gibbs free energy (in kJ) for the disproportionation reaction below to explain this phenomenon
3 M+(aq) → M3+ (aq) + 2 M (s) M = Ga or Tl
Is the reaction spontaneous for either Ga+ or Tl+? The relevant standard reduction potentials are listed below
Tl3+(aq) + 2 e-→ Tl+ (aq) E° = +1.25 V
Tl+(aq) + e-→ Tl (s) E° = -0.34 V
Ga3+(aq) + 2 e-→ Ga+ (aq) E° = -0.35 V
Ga+(aq) + e-→ Ga (s) E° = -0.20 V