Nitric Acid Oxidation of Silver

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

개요

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.

참여 물질

역할 물질 계수 상태
반응물 Silver Ag 3 (s)
반응물 Nitric Acid HNO₃ 4 (aq)
생성물 Water H₂O 2 (l)
생성물 Silver Nitrate AgNO₃ 3 (aq)

일상 속 예시

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

산업적 중요성

HNO₃에서의 은 용해는 은 정제와 주요 사진·분석 화학 물질인 질산은 제조의 첫 단계입니다.

성질

유형
Redox
가역 반응
아니오
에너지
발열
ΔH
-85.0 kJ/mol

관련 반응

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.