Is BaCl2 +(NH4)2SO4 -> BaSO4 + NH4CL a precipitation reaction?

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Solution

yes

(NH4)2SO4 and BaCl2 combined form a precipitate when Ba (2+) reacts with SO4 (2-).

BaSO4 forms a white precipitate in this equation because we can assume double-replacement activity between the compounds as follows:

(NH4)2SO4 + BaCl2 ---------> NH4Cl(aq) + BaSO4(s) (WHITE PRECIPITATION)

Ammonium Chloride is soluble (not precipitate) and Barium Sulfate is insoluble (precipitate).

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