Question

Complete and balance the following equations. Also, state the conditions necessary to bring about the change.

${\mathrm{SiO}}_2+\mathrm{C}\to$

Answer 1

• In the above reaction, Silicon dioxide is reduced using Carbon in the form of coke.
• At high temperatures, the following reaction takes place -
• ${\mathrm{SiO}}_2+\mathrm{C}\to \mathrm{SiC}+\mathrm{CO}$
• In order to balance the equation, multiply $\mathrm{C}\mathrm{with}3\mathrm{and}\mathrm{CO}\mathrm{with}2$, ${\mathrm{SiO}}_2+3\mathrm{C}\to \mathrm{SiC}+2\mathrm{CO}$
• Silicon carbide and Carbon monoxide are formed as products.