They further pointed out that the ferric chloride colour test for this substance is not specific. However, since kojic acid must be present in fairly high concentration if it is responsible for an ...

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 ...

However, he did have successful experiments with the hydrochloric acid and peroxide. He also used the same materials (along with some others) to make ferric chloride successfully. Even then ...