Chlorine Displacing Iodine from Potassium Iodide

Cl2 + 2KI → 2KCl + I2

Übersicht

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.

Teilnehmer

Rolle Substanz Koeffizient Zustand
Reaktant Chlorine Cl 1 (g)
Produkt Iodine I 1 (s)
Produkt Potassium Chloride KCl 2 (aq)

Alltägliches Beispiel

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

Industrielle Bedeutung

Halogen displacement series understanding is fundamental to water disinfection chemistry and halogen manufacturing processes.

Eigenschaften

Typ
Single Replacement
Reversibel
Nein
Energie
Exotherm
ΔH
-170,0 kJ/mol

Verwandte Reaktionen

Lithium Reacting with Water Aluminum Reducing Chromium Oxide (Aluminothermic) Iron Reacting with Hydrochloric Acid Iron Displacing Copper from Copper Sulfate Magnesium Reacting with Hydrochloric Acid Copper Displacing Silver from Silver Nitrate Iron Reacting with Copper(II) Chloride Magnesium Reacting with Sulfuric Acid Magnesium Reacting with Nitric Acid Magnesium Reacting with Steam

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.