Is K2So4 an acidic salt? Share with your friends Share 1 Abhinav Raj answered this Potassium Sulphate(K2SO4) is prepared by combining KOH(potassium Hydroxide) and H2SO4(Sulphuric Acid).As H2SO4 is a strong acid and KOH is a strong base,so K2SO4 is a neutral salt. 4 View Full Answer