Final answer:
The correct characterization of a Lewis acid is an acceptor of electron pairs, and a Lewis base is a donor of electron pairs. In their reaction, a Lewis base donates an electron pair to the Lewis acid, leading to the formation of a covalent bond.
Step-by-step explanation:
In the context of Lewis acid-base theory, the correct characterization of acids and bases is as follows:
- Acid: Acceptor
- Base: Donor
A Lewis acid is a substance that accepts a pair of electrons to form a covalent bond, while a Lewis base is a substance that donates a pair of electrons to form a covalent bond. In a reaction between a Lewis acid and base, the base provides an electron pair for the acid to accept, forming a covalent bond between the two.