what is H2S? How is it in combination reaction?
H2S, hydrogen sulfide is a chemical compound consisting of hydrogen and sulfur.
H2 + S → H2S
The reaction, Zn + 2HCl → ZnCl2 + H2 is an example of:
When H2S gas is passed through the blue solution of CuSO4, a black precipitate of copper sulphide is obtained and the sulphuric acid formed remains in the solution. The reaction is an example of: