Question

Complete the following reaction :

$$\begin{gathered} \mathrm{FeO}+{\mathrm{O}}_2\stackrel{}{\to }\mathrm{\_\_\_\_\_\_\_\_} \\ \left(\mathrm{brown}\right) \end{gathered}$$

Answer 1

Reaction of iron oxide with oxygen:

• When iron oxide ($\mathrm{FeO}$) reacts with oxygen ($\mathrm{O}$) resulting in the formation of reddish-brown ferric oxide (${\mathrm{Fe}}_2{\mathrm{O}}_3$)
• $\underset{\mathrm{ferrous}\mathrm{oxide}}{4\mathrm{FeO}\left(\mathrm{s}\right)}+\underset{\mathrm{oxygen}\mathrm{gas}}{{\mathrm{O}}_2\left(\mathrm{g}\right)}\stackrel{}{\to }\underset{\mathrm{ferric}\mathrm{oxide}}{2{\mathrm{Fe}}_2{\mathrm{O}}_3\left(\mathrm{s}\right)\left(\mathrm{brown}\right)}$