Question

Give the balanced equation for the action of heat on the following compound:

Iron (II) hydroxide.

Answer 1

The action of heat on Iron (II) hydroxide $\mathrm{Fe}{\left(\mathrm{OH}\right)}_2$:

• On heating, Iron (II) hydroxide decomposes into iron oxide and water.
• This is a decomposition reaction.

Decomposition reaction:

• When the molecules of one substance split into two or simpler substances, the reaction is called a decomposition reaction.
• These reactions are brought about in the presence of an external agent such as heat, light, and electricity.

The balanced equation is:

$$\begin{gathered} \mathrm{Fe}{\left(\mathrm{OH}\right)}_2\stackrel{∆}{\to }\mathrm{FeO}+{\mathrm{H}}_2\mathrm{O} \\ \mathrm{Iron}\left(\mathrm{II}\right)\mathrm{hydroxide}\mathrm{Iron}\mathrm{oxide}\mathrm{Water} \end{gathered}$$