Question

When hydrogen sulphide gas is passed through a blue solution of copper sulphate, a black precipitate of copper sulphide is obtained and the sulphuric acid so formed remains in the solution. The reaction is an example of- *
2 points

Answer 1

Answer:

double displacement

Explanation:

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Answer 2

Answer:

Explanation:

$H_{2} S$   + $CuSO_{4}$ ------> $Cu_{2} S$ + $H_{2}SO_{4}$

          (Blue)                (Black)

This reaction is an example of double displacement reaction.

when two compounds react, the positive ions and negative ions of two reactants switch places, forming two new products.

Here, hydrogen sulphide combines with blue copper sulphate solution to form cupper sulphide and sulphuric acid.