Many chromate (CrO42-) salts are insoluble, and most have brilliant colors that have led to their being used as pigments. Write balanced net ionic equations for the reactions of Co3+ and Cu2+ with chromate ion. (Use the lowest possible coefficients. Omit states-of-matter in your answer.)
A) Co3+ + CrO42- (Superscript 3+, superscript 2-, subscript 4)
B) Cu2+ + CrO42- (Superscript 2+, superscript 2-, subscript 4)