Question

1. a) What happen when barium chloride react with sodium salt?​

Answer 1

Explanation:

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.

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Answer 2

Answer:

Sodium sulphate chemically reacts with barium chloride in the form of their aqueous solution to form a white precipitate of barium sulphate. ... This is a double displacement reaction in which sulphate ions are displaced by chloride ions and vice-versa

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