試題詳解

90. The students used salicylic acid and acetic anhydride to synthesize aspirin in the experiment of “The Preparation of Aspirin”. The chemical reaction is shown as below: Which compound will react with FeCl₃ to become a purple complex?
(A) Salicylic acid
(B) Acetic anhydride
(C) Aspirin
(D) Acetic acid
(E) 18 M sulfuric acid