Question

test for cooper sulphate​

Answer 1

Explanation:

The first half is tested by adding few drops of sodium hydroxide solution. Formation of blue precipitate is indicative of the presence of Cu2+. To the second half, add few drops of aqueous solution of barium chloride. Formation of white precipitate indicates that it is barium sulfate implying the presence of SO42-.

Answer 2

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The first half is tested by adding few drops of sodium hydroxide solution. Formation of blue precipitate is indicative of the presence of Cu2+. ... Formation of white precipitate indicates that it is barium sulfate implying the presence of SO42-.