Question

State what you would observe when : Water is added to white anhydrous copper sulphate.

Answer 1

• When water is added to white anhydrous copper sulphate, it regains its blue colour.
• $\underset{\mathrm{Copper}\mathrm{sulphate}}{{\mathrm{CuSO}}_4\left(\mathrm{s}\right)}+\underset{\mathrm{Water}}{5{\mathrm{H}}_2\mathrm{O}(\mathrm{l}})\to \underset{\mathrm{Anhydrous}\mathrm{copper}\mathrm{sulphate}}{{\mathrm{CuSO}}_4.5{\mathrm{H}}_2\mathrm{O}\left(\mathrm{s}\right)}$