Problem: Which of the following combinations can result in the formation of a buffer? a) HBr and NH4Cl b) LiOH and HNO3 c) H3PO4 and LiH2PO4 e) None of these combinations result in a buffer.

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Which of the following combinations can result in the formation of a buffer?

a) HBr and NH4Cl

b) LiOH and HNO3

c) H3PO4 and LiH2PO4

e) None of these combinations result in a buffer.

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Based on our data, we think this problem is relevant for Professor Falcao's class at UM.