Chlorine Displacing Iodine from Potassium Iodide

Cl2 + 2KI → 2KCl + I2

개요

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.

참여 물질

역할 물질 계수 상태
반응물 Chlorine Cl 1 (g)
생성물 Iodine I 1 (s)
생성물 Potassium Chloride KCl 2 (aq)

일상 속 예시

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

산업적 중요성

할로젠 치환 계열의 이해는 수돗물 소독 화학과 할로젠 제조 공정의 기초입니다.

성질

유형
Single Replacement
가역 반응
아니오
에너지
발열
ΔH
-170.0 kJ/mol

관련 반응

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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.