Chlorine Displacing Iodine from Potassium Iodide

Cl2 + 2KI → 2KCl + I2

概要

Chlorine displaces iodine from potassium iodide solution because chlorine is more electronegative and a stronger oxidizer than iodine. The solution turns brown from the liberated iodine, which can be confirmed with starch indicator turning blue-black.

参加者

役割 物質 係数 状態
反応物 Chlorine Cl 1 (g)
生成物 Iodine I 1 (s)
生成物 Potassium Chloride KCl 2 (aq)

日常の例

The starch-iodine test, where freed iodine turns starch blue-black, is a common chemistry experiment demonstrating this halogen displacement.

産業上の重要性

ハロゲン置換系列の理解は、水の消毒化学およびハロゲン製造プロセスに不可欠です。

特性

タイプ
Single Replacement
可逆的
いいえ
エネルギー
発熱性
ΔH
-170.0 kJ/mol

関連する反応

Aluminum Reacting with Iron(III) Oxide (Thermite) Magnesium Reacting with Steam Lithium Reacting with Water Aluminum Reacting with Hydrochloric Acid Aluminum Reducing Chromium Oxide (Aluminothermic) Iron Reacting with Hydrochloric Acid Iron Displacing Copper from Copper Sulfate Zinc Displacing Copper from Copper Sulfate Magnesium Reacting with Hydrochloric Acid Fluorine Displacing Chlorine from Sodium Chloride

Frequently Asked Questions

What is the equation for Chlorine Displacing Iodine from Potassium Iodide?
The balanced equation is: Cl₂ + 2KI → 2KCl + I₂.
What type of reaction is Chlorine Displacing Iodine from Potassium Iodide?
Chlorine Displacing Iodine from Potassium Iodide is a single replacement reaction.
Is Chlorine Displacing Iodine from Potassium Iodide exothermic or endothermic?
Chlorine Displacing Iodine from Potassium Iodide is exothermic (releases energy). The enthalpy change (ΔH) is -170.0 kJ/mol.