Copper Reduction of Silver Ion

Cu + 2Ag+ → Cu2+ + 2Ag

概述

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.

参与者

角色 物质 系数 状态
反应物 Copper Cu 1 (s)
反应物 Silver Nitrate AgNO₃ 2 (aq)
产物 Silver Ag 2 (s)

日常示例

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

工业重要性

从摄影和电子废液中通过铜置换回收银的方法利用了该反应。

属性

类型
Redox
可逆
否
能量
放热
ΔH
-146.4 kJ/mol

相关反应

Iron(II) to Iron(III) Oxidation by Oxygen Bleaching with Sodium Hypochlorite Aqua Regia Dissolving Gold Cerium(IV) Reduction by Iron(II) Chlorine Oxidation of Bromide Copper Oxidation by Nitric Acid Hypochlorite Oxidation of Hydrogen Peroxide Hydrogen Peroxide as Oxidizing Agent (Acidic) Zinc Reduction of Silver Ion Displacement of Hydrogen from Acid by Magnesium

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.