Write the reaction equation: CuSO4 + BaCl2 → BaSO4 + CuCl2 FeS + K2SO4 → FeSO4 + K2S AgCl + KNO3 → AgNO3 + KCl

CuSO4 + BaCl2 → BaSO4 + CuCl2.

This reaction can proceed. In this reaction, copper sulfate reacts with barium chloride to precipitate barium sulfate and copper chloride.

FeS + K2SO4 → FeSO4 + K2S.

This reaction proceeds. When iron sulfite and potassium sulfate react, ferrous sulfate and potassium sulfide are formed.

AgCl + KNO3 → AgNO3 + KCl.

This reaction does not proceed as soluble compounds enter into the reaction. And silver chloride is a precipitate.



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