Question

Formation of barium sulphate precipitate

Answer 1

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When the solutions of sodium sulphate and barium chloride are mixed a white precipitate is formed which is insoluble in HCl. When sodium sulphate chemically reacts with barium chloride in the form of their aqueous solutions, white precipitate of barium sulphate appears.

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Answer 2

Answer:

When barium chloride combines with sodium sulphate in the form of their aqueous solutions, a white precipitate of barium sulphate is formed which is insoluble in water. The reaction also creates sodium chloride, which remains dissolved in water and so cannot be seen. ... So this reaction is a chemical change.

Explanation:

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