Question

Give balanced equation for the action of heat on aluminium hydroxide.

Answer 1

• It is a decomposition reaction brought about by heat.
• It is also known as thermal decomposition.
• Thermal decomposition reactions refer to the chemical reaction which decomposes on heating to form many products.
• Aluminum hydroxide ($\mathrm{Al}{\left(\mathrm{OH}\right)}_3$)on thermal decomposition produce aluminum oxide (${\mathrm{Al}}_2{\mathrm{O}}_3$) and water (${\mathrm{H}}_2\mathrm{O}$).
• $\underset{\mathrm{Aluminum}\mathrm{hydroxide}}{2\mathrm{Al}{\left(\mathrm{OH}\right)}_3\left(\mathrm{aq}\right)}\stackrel{∆}{\to }\underset{\mathrm{Aluminum}\mathrm{oxide}}{{\mathrm{Al}}_2{\mathrm{O}}_3\left(\mathrm{s}\right)}+\underset{\mathrm{water}}{3{\mathrm{H}}_2\mathrm{O}\left(\mathrm{l}\right)}$