Hydrogen trioxocarbonate refers to the hydrogen carbonate (bicarbonate) ion, which is represented by the chemical formula \( \text{HCO}_3^- \).
Trioxocarbonate(IV), commonly known as carbonate, has the formula \( \text{CO}_3^{2-} \).
So, the two compounds can be summarized as:
- Hydrogen trioxocarbonate (bicarbonate): \( \text{HCO}_3^- \)
- Trioxocarbonate(IV) (carbonate): \( \text{CO}_3^{2-} \)