Question

4) Given the following information:
1) C (s) + O2 (g)

Answer 1

The burning of coal in insufficient supply of oxygen forms Carbon monoxide, CO, while carbon dioxide (CO2) is formed if sufficient oxygen is present.

$C (s) + O_2 (g)\to CO_2(g)$

or

$2 C(s) + O_2(g) → 2 CO(g)$