Hi, I've attached the diagram of the before addition of excess alkali and after (after is below the black line)
I was wondering how do you know the alkali would only affect the OH and SO3H here?
Why does it have no effect on NH2?
-SO3H groups are very acidic (think about H2SO3), similarly phenolic OHs are also acidic
NH2 is a basic functionality and won't be effected
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