Write the formula for White vitriol.

• White vitriol is a colorless crystalline solid composed of Zinc and Sulphate ions.
• This is obtained by reacting Zinc with Sulphuric acid.
• The reaction is shown below.
  $$\begin{gathered} \mathrm{Zn}\left(\mathrm{s}\right)+{\mathrm{H}}_2{\mathrm{SO}}_4\left(\mathrm{aq}\right)\to {\mathrm{ZnSO}}_4\left(\mathrm{aq}\right)+{\mathrm{H}}_2\left(\mathrm{g}\right) \\ \mathrm{Zinc}\mathrm{Sulphuric}\mathrm{Zinc}\mathrm{Hydrogen} \\ \mathrm{acid}\mathrm{sulphate} \end{gathered}$$
• Thus, the chemical formula of White vitriol is Zinc sulfate heptahydrate ${\mathbf{ZnSO}}_{\mathbf{4}}\mathbf{.}\mathbf{7}{\mathbf{H}}_{\mathbf{2}}\mathbf{O}$.