yes it does
You mix the whole lot in water, this means that the saline Potassium Sulphate dissolves into the water. Filter off the Potassium sulphate solution and all you have left is the water. Evaporate off...
Sulphuric acid. I don't recommend you try this without safeguards.
The chemical symbol for Potassium Sulphate is K2SO4
K2SO4 i think