Chlor-Alkali Electrolysis

2NaCl + 2H2O → Cl2 + 2NaOH + H2

개요

Electrolysis of concentrated brine (NaCl solution) produces three essential industrial chemicals simultaneously: chlorine gas at the anode, sodium hydroxide solution at the cathode, and hydrogen gas as a byproduct. Modern membrane cells use ion-exchange membranes to separate products and achieve 95%+ current efficiency.

참여 물질

역할 물질 계수 상태
반응물 Sodium Chloride NaCl 2 (aq)
반응물 Water H₂O 2 (l)
생성물 Sodium Hydroxide NaOH 2 (aq)

일상 속 예시

The chlorine in your tap water and the lye in drain cleaner both come from this single electrochemical process.

산업적 중요성

염소-알칼리 산업은 연간 약 7,500만 톤의 NaOH와 6,500만 톤의 Cl₂를 생산하며, 전 세계 전력의 약 1%를 소비합니다.

성질

유형
Electrochemical
가역 반응
아니오
에너지
흡열
ΔH
422.0 kJ/mol

관련 반응

Electrolysis of Water Electrolytic Production of Chlorate Electrorefining of Copper Alkaline Battery Discharge Anodizing of Aluminum Cathodic Protection (Zinc Sacrificial Anode) Chrome Electroplating Nickel-Metal Hydride Battery Sodium-Sulfur Battery Electrochemical CO₂ Reduction to CO

Frequently Asked Questions

What is the equation for Chlor-Alkali Electrolysis?
The balanced equation is: 2NaCl + 2H₂O → Cl₂ + 2NaOH + H₂.
What type of reaction is Chlor-Alkali Electrolysis?
Chlor-Alkali Electrolysis is a electrochemical reaction.
Is Chlor-Alkali Electrolysis exothermic or endothermic?
Chlor-Alkali Electrolysis is endothermic (absorbs energy). The enthalpy change (ΔH) is 422.0 kJ/mol.