Carbonate is a salt of carbonic acid, characterized by the presence of the carbonate ion. The carbonate ion combine with different element to form useful compounds that find special application in diverse industries.
Cupric carbonate is a blue-green compound (chemical formula CuCO3) forming part of the verdigris patina that is found on weathered brass, bronze, and copper. Cupric carbonate is prepared by combining aqueous solutions of copper sulfate and sodium carbonate. Copper carbonate precipitates from the solution: