Zinc Reduction of Silver Ion
Zn + 2Ag+ → Zn2+ + 2Ag
Overview
Zinc reduces silver ions to metallic silver with a large cell potential of +1.56 V. Zinc is oxidized from 0 to +2 while silver is reduced from +1 to 0. This reaction proceeds vigorously due to the large potential difference between zinc and silver electrodes.
Participants
| Role | Substance | Coefficient | State |
|---|---|---|---|
| Reactant | Zinc Zn | 1 | (s) |
| Reactant | Silver Nitrate AgNO₃ | 2 | (aq) |
| Product | Silver Ag | 2 | (s) |
Everyday Example
Zinc's strong reducing power is exploited in zinc-silver oxide button cell batteries used in watches, hearing aids, and calculators.
Industrial Importance
Silver oxide-zinc batteries provide high energy density for miniature electronic devices. Silver recovery from waste uses zinc cementation.
Properties
- Type
- Redox
- Reversible
- No
- Energy
- Exothermic
- ΔH
- -310.0 kJ/mol
Related Reactions
Aqua Regia Dissolving Gold
Bleaching with Sodium Hypochlorite
Cerium(IV) Reduction by Iron(II)
Chlorine Oxidation of Bromide
Chromate-Dichromate Equilibrium
Contact Process SO₂ Oxidation
Copper Displaced by Iron
Copper Oxidation by Nitric Acid
Copper Patina Formation (Verdigris)
Copper Reduction of Silver Ion
Frequently Asked Questions
What is the equation for Zinc Reduction of Silver Ion?
The balanced equation is: Zn + 2Ag⁺ → Zn²⁺ + 2Ag.
What type of reaction is Zinc Reduction of Silver Ion?
Zinc Reduction of Silver Ion is a redox reaction.
Is Zinc Reduction of Silver Ion exothermic or endothermic?
Zinc Reduction of Silver Ion is exothermic (releases energy). The enthalpy change (ΔH) is -310.0 kJ/mol.