Here's my question: State whether each of the following solutions is a buffer system or not. a) KH2PO4/H3PO4 H3PO4 is a weak acid H2PO4- is the conjugate base derived from the salt thus, this is a buffer system b) NaClO4/HClO4 not a buffer system b/c HClO4 is a strong acid c) NH3/NH4N03 not really sure about this one? NH3 is the base and NH4NO3 is the acid, i suppose but I'm not sure how to determine the relative strength/weakness of these. Could someone tell me whether these are correct or not? And please help me with part c?