Copper Reduction of Silver Ion

Cu + 2Ag+ → Cu2+ + 2Ag

Visão geral

Copper metal reduces silver ions to metallic silver while being oxidized to Cu²⁺. Silver deposits on the copper surface in beautiful dendritic crystal formations. The cell potential of +0.46 V (E°(Ag⁺/Ag) - E°(Cu²⁺/Cu) = 0.80 - 0.34) drives this spontaneous reaction.

Participantes

Papel Substância Coeficiente Estado
Reagente Copper Cu 1 (s)
Reagente Silver Nitrate AgNO₃ 2 (aq)
Produto Silver Ag 2 (s)

Exemplo do cotidiano

The silver tree experiment, where a copper wire in silver nitrate solution grows beautiful silver crystal dendrites, is a popular science demonstration.

Importância industrial

A cementação da prata por cobre é utilizada na recuperação de prata a partir de soluções residuais fotográficas e eletrónicas.

Propriedades

Tipo
Redox
Reversível
Não
Energia
Exotérmico
ΔH
-146,4 kJ/mol

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Frequently Asked Questions

What is the equation for Copper Reduction of Silver Ion?
The balanced equation is: Cu + 2Ag⁺ → Cu²⁺ + 2Ag.
What type of reaction is Copper Reduction of Silver Ion?
Copper Reduction of Silver Ion is a redox reaction.
Is Copper Reduction of Silver Ion exothermic or endothermic?
Copper Reduction of Silver Ion is exothermic (releases energy). The enthalpy change (ΔH) is -146.4 kJ/mol.