What is one of the major products in the electrolysis of a concentrated aqueous

Question

What is one of the major products in the electrolysis of a concentrated aqueous sodium chloride solution?

Reduction Half-Reaction

E° (V)

Na+(aq) + e– --> Na(s)

–2.71

Mg2+(aq) + 2e– --> Mg(s)

–2.37

2H2O(l) + 2e– --> H2(g) + 2OH–(aq)

–0.83

O2(g) + 4H+(aq) + 4e– --> 2H2O(l)

1.23

Cl2(g) + 2e– --> 2Cl–(aq)

1.36

Na

O2

Cl2

H2O

Mg

Reduction Half-Reaction

E° (V)

Na+(aq) + e– --> Na(s)

–2.71

Mg2+(aq) + 2e– --> Mg(s)

–2.37

2H2O(l) + 2e– --> H2(g) + 2OH–(aq)

–0.83

O2(g) + 4H+(aq) + 4e– --> 2H2O(l)

1.23

Cl2(g) + 2e– --> 2Cl–(aq)

1.36

Explanation / Answer

Option C

At anode oxidation of chlorine ion will occur to chlorine gas . At anode Na+ ion will be convert f to Na. here Cl2 gas will be major product.

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