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Q.

How could you extract sodium from molten sodium chloride?

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a

Reduction by carbon

b

Decomposition

c

Electrolysis

d

Oxidation

answer is B.

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Detailed Solution

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  • Sodium is removed by electrolytically reducing molten or fused sodium chloride.
  • As electricity passes through molten sodium chloride, decomposition occurs and the sodium metal is formed at the cathode and chlorine gas is formed at the anode.
  • Sodium moves to cathode as loses one electron and chlorine moves to anode as it accepts the electron and becomes negative.
     
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