Multiple Choice
Which of the following is the correct chemical formula for carbon tetrachloride?
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3. Chemical Reactions
Naming Molecular Compounds
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What is the correct name for the molecular compound SO_3?
A
Sulfur(III) oxide
B
Sulfur trioxalate
C
Sulfur oxide
D
Sulfur trioxide
Verified step by step guidance1
Identify the elements in the compound SO_3: sulfur (S) and oxygen (O).
Determine the number of atoms of each element in the formula: 1 sulfur atom and 3 oxygen atoms.
Recall the naming rules for molecular (covalent) compounds: use prefixes to indicate the number of atoms (mono-, di-, tri-, tetra-, etc.) and name the second element with an '-ide' suffix.
Apply the prefixes: since there is one sulfur atom, the prefix 'mono-' is often omitted for the first element; for three oxygen atoms, use the prefix 'tri-'.
Combine the name parts: 'sulfur' + 'tri-' + 'oxide' to form 'sulfur trioxide'.
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