Hydrogen Peroxide as Oxidizing Agent (Acidic)

H2O2 + 2H+ + 2I− → I2 + 2H2O

概要

Hydrogen peroxide oxidizes iodide ions to iodine in acidic solution. H₂O₂ acts as the oxidizing agent, being reduced to water. The appearance of brown iodine (or blue-black with starch indicator) demonstrates the oxidizing power of H₂O₂. This reaction is used in iodometric analysis.

参加者

役割 物質 係数 状態
反応物 Hydrogen Peroxide H₂O₂ 1 (aq)
反応物 Iodine I 2 (aq)
生成物 Water H₂O 2 (l)

日常の例

The iodine clock reaction, a popular chemistry demonstration with sudden color changes, uses variations of this H₂O₂-iodide reaction.

産業上の重要性

H₂O₂の酸化剤としての理解はパルプ漂白、水処理、化学合成における利用に重要である。ヨウ素時計反応は反応速度論や化学振動の教育的デモンストレーションに広く使われる。

特性

タイプ
Redox
可逆的
いいえ
エネルギー
発熱性
ΔH
-210.0 kJ/mol

関連する反応

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) Copper Oxidation by Nitric Acid Hypochlorite Oxidation of Hydrogen Peroxide Hydrogen Peroxide Disproportionation Iodine and Sodium Thiosulfate Titration Displacement of Hydrogen from Acid by Magnesium

Frequently Asked Questions

What is the equation for Hydrogen Peroxide as Oxidizing Agent (Acidic)?
The balanced equation is: H₂O₂ + 2H⁺ + 2I⁻ → I₂ + 2H₂O.
What type of reaction is Hydrogen Peroxide as Oxidizing Agent (Acidic)?
Hydrogen Peroxide as Oxidizing Agent (Acidic) is a redox reaction.
Is Hydrogen Peroxide as Oxidizing Agent (Acidic) exothermic or endothermic?
Hydrogen Peroxide as Oxidizing Agent (Acidic) is exothermic (releases energy). The enthalpy change (ΔH) is -210.0 kJ/mol.