Question

Write a balanced chemical equation for the following:

Ammonium hydroxide is added to Ferrous Sulphate solution.

Answer 1

When Ammonium hydroxide$\mathbf{\left(}{\mathbf{NH}}_{\mathbf{4}}\mathbf{OH}\mathbf{\right)}$ is added to the solution of Ferrous Sulphate$\mathbf{\left(}{\mathbf{FeSO}}_{\mathbf{4}}\mathbf{\right)}$ then it produce Iron hydroxide$\mathbf{\left(}\mathbf{Fe}{\mathbf{\left(}\mathbf{OH}\mathbf{\right)}}_{\mathbf{2}}\mathbf{\right)}$ and Ammonium sulphate$\mathbf{\left(}{\mathbf{\left(}{\mathbf{NH}}_{\mathbf{4}}\mathbf{\right)}}_{\mathbf{2}}{\mathbf{SO}}_{\mathbf{4}}\mathbf{\right)}$.

Balanced chemical equation:

$\underset{\mathrm{Ammonium}\mathrm{hydroxide}}{\underbrace{2{\mathrm{NH}}_4\mathrm{OH}\left(\mathrm{aq}\right)}}+\underset{\mathrm{Ferrous}\mathrm{sulphate}}{\underbrace{{\mathrm{FeSO}}_4\left(\mathrm{aq}\right)}}\to \underset{\mathrm{Iron}\mathrm{hydroxide}}{\underbrace{\mathrm{Fe}{\left(\mathrm{OH}\right)}_2\left(\mathrm{s}\right)}}+\underset{\mathrm{Ammonium}\mathrm{sulphate}}{\underbrace{{\left({\mathrm{NH}}_4\right)}_2{\mathrm{SO}}_4\left(\mathrm{aq}\right)}}$

From the above reaction, we observed that dirty green precipitate of $\mathrm{Fe}{\left(\mathrm{OH}\right)}_2$ is formed. This reaction is a double displacement reaction.