Chlorine Displacing Iodine from Potassium Iodide

Cl2 + 2KI → 2KCl + I2

Aperçu

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.

Participants

Rôle Substance Coefficient État
Réactif Chlorine Cl 1 (g)
Produit Iodine I 1 (s)
Produit Potassium Chloride KCl 2 (aq)

Exemple du quotidien

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

Importance industrielle

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

Propriétés

Type
Single Replacement
Réversible
Non
Énergie
Exothermique
ΔH
-170,0 kJ/mol

Réactions associées

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.