What is the chemical formula for carbonate?

The chemical formula for carbonate is indeed represented as CO3. Carbonate is a polyatomic ion composed of one carbon atom bonded to three oxygen atoms. In this structure, the carbon atom has a formal charge of +4, while the three oxygen atoms each carry a -2 charge. When combined, the overall charge of the carbonate ion is -2, which is essential for understanding its role in various chemical reactions, particularly in acid-base chemistry and in the formation of salts.

The significance of the formula CO3 emerges in its application within diverse contexts, such as in the carbon cycle and in geological samples where carbonate minerals can be found. Recognizing that carbonate forms compounds like calcium carbonate (CaCO3) and sodium carbonate (Na2CO3) helps illustrate its importance in both biological systems and everyday materials.

Thus, CO3 accurately conveys the fundamental structure of the carbonate ion and its chemical properties.