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Question
How is calcium extracted through electrometallurgy? Give the reactions involved.
Chemical Equations/Structures
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Solution
It is extracted by the electrolysis of its molten salt (fused calcium chloride, CaCl2).
Reaction at Cathode:
\[\ce{Ca^{2+} + 2e- -> Ca}\]
Reaction at Anode:
\[\ce{2Cl^- -> Cl2 + 2e-}\]
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