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CGP EDU Academic Team
Published on: August 12, 2026
How NaOH is commercialy prepared ? Which cell is used ?
Text Solution
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NaOH is commercialy prepared by electrolysis of brine solution in diaphragm cell.
Anode reaction: 2Cl – ⎯→ Cl 2 + 2e –
Cathode reactions : 2H 2 O + 2e – ⎯→ H 2 + 2OH –
Na + + OH – ⎯→ NaOH
Over all reaction: 2Na + + 2Cl – + 2H 2 O ⎯→ 2NaOH + H 2 + Cl 2
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