Write the chemical formula for Potash alum.

Potash alum:

• Potash alum is a chemical compound widely used as Potassium sulphate dodecahydrate.
• It is a double salt that is used commonly in the field of medicine and the water treatment process.
• Potash alum is also known as Potassium alum or Potassium aluminium sulfate.
• The chemical formula for Potash alum can be given as ${\mathbf{K}}_{\mathbf{2}}{\mathbf{SO}}_{\mathbf{4}}\mathbf{.}{\mathbf{Al}}_{\mathbf{2}}{\mathbf{\left(}{\mathbf{SO}}_{\mathbf{4}}\mathbf{\right)}}_{\mathbf{3}}\mathbf{.}\mathbf{24}{\mathbf{H}}_{\mathbf{2}}\mathbf{O}$.