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Is it true that under certain conditions, `Mg` can reduce `SiO_(2)`, and `Si` can reduce `MgO` ? |
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Answer» (i) `SiO_(2) + 2Mg rarr Si + 2MgO` Well-powdered quartz is mixted with magnesium and heated in a fire clay crucible along with some quantify of calcined magnesia. (ii) `2MgO overset(2000^@C)rarr SiO_(2) + 2Mg`. |
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