Question

12 multiple choice 1 point which of the molecules has the highest boiling point? liquid 3: ch₃ch₂ch₃ liquid 2: ch₂ch₃ liquid 4: ch₃ch₂ch₂ch₃ liquid 1: ch₄ clear my selection

Explanation:

Step1: Analyze intermolecular forces

All these molecules are alkanes and have only London dispersion forces. London dispersion forces increase with the size of the molecule (more electrons, larger surface - area).

Step2: Compare the size of molecules

The molecular formulas are:

• Liquid 1: \(CH_4\) (1 carbon atom)
• Liquid 2: \(C_2H_6\) (2 carbon atoms)
• Liquid 3: \(C_3H_8\) (3 carbon atoms)
• Liquid 4: \(C_4H_{10}\) (4 carbon atoms)

As the number of carbon atoms increases, the size of the molecule increases. Larger molecules have stronger London dispersion forces.

Answer:

Liquid 4: \(CH_3CH_2CH_2CH_3\)