Metallic sulphide reacting with hydrochloric acid forms salt and ___.
hydrogen gas.
carbon dioxide gas.
sulphur dioxide gas.
hydrogen sulphide gas.
Metallic sulphide reacting with hydrochloric acid forms salt and hydrogen sulphide gas.
Na2S+2HCl→2NaCl+H2S↑
A metal sulphide X reacts with acid Y to form sodium sulphate and hydrogen sulphide. So, Y is __.