MCQ
In laboratory silicon can be prepared by the reaction
- ABy heating carbon in electric furnace
- BBy heating potassium with potassium dichromate
- ✓Silica with magnesium
- DNone of these
Reaction: $SiO _2+2 Mg \rightarrow Si +2 MgO$
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$X + \frac{1}{2}{O_2}\,\, \to \,\,XO + 90.8\,kJ$
It follows that the heat of reaction for the following process $M + XO$ $\rightleftharpoons$ $MO + X$ is given by......$kJ$
