This reaction is shown below. In this reaction the ferric ion (Fe 3+) is acting as a Lewis Acid and the oxalate anion (C 2 O 4 2-) as a Lewis Base. A Lewis Acid is an electron pair acceptor and a ...

Lewis asserts that the casual observer does ... It later led to his theory of acids and bases, and also to his explanations of fluorescence and phosphorescence — two closely related effects ...