Write the name and chemical formula of an amphoteric ion.
HCO3^- = bicarbonate ion (that's the old name; the new name is hydrogen carbonate ion).
An amphoteric ion is a type of ion that can act as both an acid and a base, meaning it can both donate and accept protons (H+ ions). One example of an amphoteric ion is the carbonate ion, which has the chemical formula CO3^2-.
To determine the name and chemical formula of an amphoteric ion, you can follow these steps:
1. Identify elements that can form multiple oxidation states: Amphoteric ions typically involve elements that can exhibit multiple oxidation states, such as carbon, sulfur, or tin.
2. Determine the common polyatomic ion with those elements: Look for polyatomic ions containing the identified element. For example, the carbonate ion (CO3^2-) contains the element carbon.
3. Identify the charge of the ion: Check the charge of the polyatomic ion. In the case of the carbonate ion, it has a 2- charge.
4. Use appropriate nomenclature: For ions with a charge between 1-3 (inclusive), the naming convention uses the suffixes -ide, -ite, and -ate respectively. In the case of carbonate, the -ate suffix is used.
By following these steps, you can determine that the name and chemical formula of an amphoteric ion is the carbonate ion (CO3^2-).