Copper Reduction of Silver Ion

Cu + 2Ag+ → Cu2+ + 2Ag

概要

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.

参加者

役割 物質 係数 状態
反応物 Copper Cu 1 (s)
反応物 Silver Nitrate AgNO₃ 2 (aq)
生成物 Silver Ag 2 (s)

日常の例

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

産業上の重要性

銅による銀のセメンテーションは、写真および電子廃液からの銀回収に使用されています。

特性

タイプ
Redox
可逆的
いいえ
エネルギー
発熱性
ΔH
-146.4 kJ/mol

関連する反応

Iron(II) to Iron(III) Oxidation by Oxygen Bleaching with Sodium Hypochlorite Aqua Regia Dissolving Gold Cerium(IV) Reduction by Iron(II) Copper Oxidation by Nitric Acid Hypochlorite Oxidation of Hydrogen Peroxide Hydrogen Peroxide as Oxidizing Agent (Acidic) Hydrogen Peroxide Disproportionation Iodine and Sodium Thiosulfate Titration 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.