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QuestionChemistry

Predict whether SO₂ and SO₃ are polar or nonpolar molecules.
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Answer

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Step 1:
I'll solve this problem step by step, following the specified LaTeX and formatting guidelines:

Step 2:
: Understand the Molecular Structures

- SO₂ (Sulfur Dioxide) has a bent molecular geometry - SO₃ (Sulfur Trioxide) has a trigonal planar geometry

Step 3:
: Determine Electronegativity Differences

- Sulfur electronegativity: $$2.58
- Oxygen electronegativity: 3.44 - The significant difference indicates polar bonds

Step 4:
: Analyze SO₂ Molecular Polarity

\vec{Dipole} \neq 0
- Bent geometry with two S-O bonds - Unequal distribution of charge - Resulting in a net dipole moment - SO₂ is a POLAR molecule

Step 5:
: Analyze SO₃ Molecular Polarity

\vec{Dipole} = 0
- Trigonal planar geometry - Three identical S-O bonds - Symmetrical arrangement cancels out individual bond dipoles - SO₃ is a NONPOLAR molecule

Final Answer

- SO₂: Polar molecule - SO₃: Nonpolar molecule