Which of the following molecules is expected to have the higher boiling point?Select answer from the options belowEthanolAcetic acid

1. Break Down the Problem

We need to compare the boiling points of two molecules: ethanol and acetic acid. Factors affecting boiling points include molecular weight, intermolecular forces (like hydrogen bonding), and molecular structure.

2. Relevant Concepts

• Ethanol (C₂H₅OH): Ethanol has hydrogen bonding due to its hydroxyl (-OH) group, but it has a lower molecular weight (molar mass = 46.07 g/mol).
• Acetic Acid (CH₃COOH): Acetic acid also exhibits hydrogen bonding as it contains a hydroxyl group and a carboxylic acid group. It has a higher molecular weight (molar mass = 60.05 g/mol).

3. Analysis and Detail

• Hydrogen bonding: Both compounds can form hydrogen bonds, but acetic acid can form dimers due to the presence of two polar functional groups which can increase intermolecular interactions.
• Molecular weight: Generally, higher molecular weight molecules have higher boiling points, all else being equal.

4. Verify and Summarize

While both have hydrogen bonding, acetic acid's ability to form dimers and its higher molecular weight indicate it is likely to have a higher boiling point.

Final Answer

Acetic acid is expected to have the higher boiling point compared to ethanol.