Complex sentence: Cadmium sulfide can be prepared by the precipitation from soluble cadmium (II) salts with sulfide ion and this has been used in the past for gravimetric analysis and qualitative inorganic analysis.
Split into simpler sentences: Cadmium sulfide can be prepared by the precipitation from soluble cadmium (II) salts with sulfide ion. This reaction has been used for gravimetric analysis and qualitative inorganic analysis.