Final answer:
SO₂ is named sulfur dioxide, and H₂SO₄ is sulfuric acid. FeSO₄ is iron (II) sulfate and BF₃ is boron trifluoride. Prefixes in compound names indicate the number of atoms (e.g., sulfur trioxide for SO₃).
Step-by-step explanation:
Naming Chemical Compounds
In chemistry, compounds are named according to a set of rules depending on the type of compound (ionic, covalent, acid, etc.). For the compound SO₂, it is named sulfur dioxide as it consists of sulfur and two oxygen atoms. Similarly, H₂SO₄ is named sulfuric acid, and it is an important industrial chemical.
Examples of Naming Chemical Compounds
The formula FeSO₄ corresponds to iron (II) sulfate, where Fe is iron with a +2 oxidation state (also referred to as ferrous sulfate). Boron trifluoride is represented by the formula BF₃. Ionic compounds such as Fe₂S₃ are named iron (III) sulfide, reflecting iron's +3 oxidation state.
When naming covalent compounds, such as SO₂ and SO₃, prefixes are used to indicate the number of each type of atom present. Sulfur dioxide has two oxygen atoms, while sulfur trioxide has three.
Considering the oxidation of sulfites to sulfates in presence of air, compounds like H₂SO₃ (sulfurous acid) can oxidize to form sulfate ions (HSO₄⁻), resulting in compounds such as sulfuric acid.