1. The task is to design a synthetic intermolecular hydrogen bond for the given molecules, using the provided table of functional groups and their properties.
2. The molecules are:
- Molecule A: Contains a carboxylic acid group (COOH)
- Molecule B: Contains an amine group (NH₂)
3. According to the table, carboxylic acids can act as both H-bond donors and acceptors, while amines can act as H-bond donors and weak acceptors.
4. To form a synthetic intermolecular hydrogen bond:
- The hydrogen from the carboxylic acid (O-H) in Molecule A will act as the donor.
- The nitrogen lone pair in the amine group of Molecule B will act as the acceptor.
5. The resulting hydrogen bond is: O-H···N
6. This interaction is favorable because:
- The O-H bond is highly polarized, making the hydrogen partially positive.
- The nitrogen in the amine has a lone pair, making it electron-rich and capable of accepting the hydrogen bond.
- The bond strength is moderate to strong, suitable for intermolecular interactions.
7. Example: Acetic acid (CH₃COOH) and methylamine (CH₃NH₂) can form such a hydrogen bond in solution or solid state.
Parent Tip: Review the logic above to help your child master the concept of intermolecular forces worksheet.
