Chapter 20, Problem 37E

Silicon is produced for the chemical and electronics industries by the following reactions. Give the balanced equation for each reaction.

a. ${\text{SiO}}_{\text{2}}\left(s\right)+\text{C}(s)\to \text{Si}\left(s\right)+\text{ CO}\left(g\right)$

b. Silicon tetrachloride is reacted with very pure magnesium, producing silicon and magnesium chloride.

c. ${\text{Na}}_{\text{2}}{\text{SiF}}_{\text{6}}\left(s\right)+\text{ Na}\left(s\right)\to \text{Si}(s)+\text{ NaF}\left(s\right)$