The chemical equation for the formation of barium sulfate precipitate is: Ba²⁺ + SO₄²⁻ → BaSO₄. Barium ions (Ba²⁺) react with sulfate ions (SO₄²⁻) to produce insoluble barium sulfate (BaSO₄), which precipitates out of the solution.
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The chemical equation for the formation of barium sulfate precipitate through a double displacement or precipitation reaction is:
Ba²⁺(aq) + SO₄²⁻(aq) → BaSO₄(s)
In this reaction, barium ions (Ba²⁺) from a soluble barium compound react with sulfate ions (SO₄²⁻) from a soluble sulfate compound. The combination of these ions results in the insoluble salt, barium sulfate (BaSO₄), which precipitates as a solid. The precipitation occurs due to the low solubility of barium sulfate in water, leading to the formation of a visible precipitate that settles out of the solution.