Question

Explain the electrolysis method for preparation of sodium hydroxide.
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Answer 1

Explanation:

Sodium hydroxide is a commonly used base. Electrolysis of concentrated sodium chloride solutions (brine) produces chlorine gas, hydrogen gas and aqueous sodium hydroxide. Cl2(g) is produced at the anode (positive electrode). H2(g) and NaOH(aq) are produced at the cathode (negative electrode).

Answer 2

• Sodium hydroxide is a commonly used base. Electrolysis of concentrated sodium chloride solutions (brine) produces chlorine gas, hydrogen gas and aqueous sodium hydroxide. Cl2(g) is produced at the anode (positive electrode). H2(g) and NaOH(aq) are produced at the cathode (negative electrode).

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