Question

What is the colour of the freshly prepared ${\mathrm{FeSO}}_4$ solution?

Answer 1

1. Iron sulphate (${\mathrm{FeSO}}_4$) is an inorganic chemical compound with a molar mass of $151.908{\mathrm{gmol}}^{-1}$.
2. It is used in the dye industry as a mordant and coagulant in industrial waste.
3. The colour of freshly prepared Iron sulphate is blue-green but the colour changes into white due to the heating process.