Identify the following substances:
(a) An alkaline gas which produces dense white fumes when reacted with HCl gas.
(b) The anion present in the salt, which produces a gas with the smell of rotten eggs when reacted with dil. HCl.
(c) The particles present in strong electrolytes.
(a) Ammonia
(b) Sulphide [S2-]
(c) Mainly ions.
