BaCl2 + K2SO4 → BaSO4 + 2KCl
In this reaction, the positively charged barium ions (Ba2+) from barium chloride combine with the negatively charged sulfate ions (SO42-) from potassium sulfate to form insoluble barium sulfate. Barium sulfate is a white, crystalline solid that is commonly used as a contrast agent in medical imaging procedures.
Meanwhile, the positively charged potassium ions (K+) from potassium sulfate combine with the negatively charged chloride ions (Cl-) from barium chloride to form potassium chloride. Potassium chloride is a colorless, crystalline solid that is widely used as a fertilizer and in the food industry as a salt substitute.
The reaction between barium chloride and potassium sulfate is a precipitation reaction, where an insoluble product (barium sulfate) is formed and separates out of the solution as a solid. The reaction proceeds until one of the reactants is completely consumed or until the reaction reaches equilibrium.
