Nitric Acid Oxidation of Silver

3Ag + 4HNO₃(dilute) → 3AgNO₃ + NO + 2H₂O

Обзор

Dilute nitric acid dissolves silver metal, oxidizing it to Ag⁺ while the nitrate is reduced to NO gas. Silver does not dissolve in HCl or H₂SO₄(dilute) because the H⁺ ion cannot oxidize silver, but nitric acid's nitrate ion provides sufficient oxidizing power. This is part of the aqua regia chemistry for noble metals.

Участники

Роль	Вещество	Коэффициент	Состояние
Реагент	Silver Ag	3	(s)
Реагент	Nitric Acid HNO₃	4	(aq)
Продукт	Water H₂O	2	(l)
Продукт	Silver Nitrate AgNO₃	3	(aq)

Пример из жизни

Jewelers use nitric acid to test whether a piece is real silver, as silver dissolves producing a green solution.

Промышленное значение

Silver dissolution in HNO₃ is the first step in silver refining and in preparing silver nitrate, a key photographic and analytical chemical.

Свойства

Тип: Redox
Обратимая: Нет
Энергия: Экзотермическая
ΔH: -85,0 kJ/mol

Связанные реакции

Iron(II) to Iron(III) Oxidation by Oxygen Bleaching with Sodium Hypochlorite Copper Reduction of Silver Ion 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) Displacement of Hydrogen from Acid by Magnesium

Frequently Asked Questions

What is the equation for Nitric Acid Oxidation of Silver?

The balanced equation is: 3Ag + 4HNO₃(dilute) → 3AgNO₃ + NO + 2H₂O.

What type of reaction is Nitric Acid Oxidation of Silver?

Nitric Acid Oxidation of Silver is a redox reaction.

Is Nitric Acid Oxidation of Silver exothermic or endothermic?

Nitric Acid Oxidation of Silver is exothermic (releases energy). The enthalpy change (ΔH) is -85.0 kJ/mol.