how will you ensure the complete precipitation of barium sulfate? ( 2.5marks)
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The precipitate is formed by adding the barium chloride slowly to the hot sulfate solution. The slow addition assures that the relative supersaturation always remains low so as to avoid the formation of a non-crystalline colloidal suspension of barium sulfate particles.
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A solution of barium chloride is mixed with a solution of potassium sulfate and a precipitate forms. ... By examining the solubility rules we see that, while most sulfates are soluble, barium sulfate is not. Because it is insoluble in water we know that it is the precipitate.
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