Question

Write the balanced equation for the following reaction:

Iron(II) chloride solution with sodium hydroxide solution.

Answer 1

Iron (II) chloride (pale green colour) solution reacts with sodium hydroxide solution to form dirty green precipitate of ferrous hydroxide, which on further addition of excess sodium hydroxide stays insoluble.

$$\begin{gathered} {\mathrm{FeCl}}_2\left(\mathrm{aq}\right)+2\mathrm{NaOH}\left(\mathrm{aq}\right)\to \mathrm{Fe}{\left(\mathrm{OH}\right)}_2\left(\mathrm{s}\right)+2\mathrm{NaCl}\left(\mathrm{aq}\right) \\ \mathrm{Iron}\left(\mathrm{II}\right)\mathrm{chloride}\mathrm{Sodium}\mathrm{hydroxide}\mathrm{Ferrous}\mathrm{hydroxide}\mathrm{Sodium}\mathrm{chloride} \end{gathered}$$