So I had a question about AAMC 4 #108. I was reading the explanation, and I just wanted to see if someone had a better explanation for why (or if they could just explain solubility). "The passage states that compound C (ed note: irrelevant) is soluble in both dilute acid and base. Carboxylic acids are soluble in dilute base (5% NaOH, ex) and amines are soluble in dilute acid. Amides and nitro compounds are not soluble in dilute base or acid." Why are acids soluble in base and amines soluble in acids? I feel like this is a stupid question, but help me out please.