chemistry

Okay, so apparently ASA and FeCl3 form a violet complex and FeCl3 forms with phenol groups to make purple. Looking at the structures of ASA and salicylic acid, only salicylic acid has the phenol group. The thing is, salicylic acid is supposed to be an impurity in the synthesized ASA.

If they both form purple, how am I supposed to look at two solutions and determine which one has the higher concentration of ASA in it?

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asked by Andrea

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