Engineering
Chemistry
Intensive Extensive State and Path Function
Question

The carbon-based reduction method is NOT used for the extraction of

iron from Fe2O3

magnesium from MgCO3 · CaCO3

tin from SnO2

aluminium from Al2O3

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Solution
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More electropositive metals like Al, Mg, Ca, Na are reduced by electrolytic reductions not by carbon reduction because they from carbides with them.

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