What is the formula for chromium acetate?

The molecular formula for chromium acetate is C6H9CrO6. This formula is also written as Cr(OAc)3, and it corresponds to a single chromium ion with a charge of positive three and three acetate ions with a charge of minus one each.

The metallic element chromium is one of several elements that can exist in differently charged states in nature. Without specifying the charged state of the chromium ion, which can exist with a charge of positive three or positive two, the formula for chromium acetate changes; a charge of positive two corresponds to only two acetate ions being present. The standard practice is to write out the name of the compound in Roman numerals, describing the charge on the chromium.