IB DP Chemistry: AHL 18.1 Lewis acids and bases : Study Notes IB DP PhysicsIB DP MathsIB DP ChemistryIB DP Biology IBDP Chemistry: Study Notes- All Chapters IBDP Chemistry SL&HL: IB Style Question BankIBDP Physics SL&HL: IB Style Question BankIBDP Biology SL&HL: IB Style Question BankIBDP Maths AA&AI: IB Style Question Bank 18.1 Lewis acids and bases Essential Idea:The acid–base concept can be extended to reactions that do not involve proton transfer.Understandings:A Lewis acid is a lone pair acceptor and a Lewis base is a lone pair donor.When a Lewis base reacts with a Lewis acid a coordinate bond is formed.A nucleophile is a Lewis base and an electrophile is a Lewis acid.Applications and Skills:Application of Lewis’ acid–base theory to inorganic and organic chemistry to identify the role of the reacting species.