Buffer Solutions

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hhequation

Which of the following combinations cannot produce a buffer solution? Identify proton donor and proton acceptors.

a. HNO2 and NaNO2

b. HCN and NaCN

c. HClO4 and NaClO4

d. NH3 and (NH4)2SO4

e. NH3 and NH4Br

 

Answer:

HClO4 and NaClO4 because HClO4 is a strong acid (buffers require the use of a weak acid in mixture with its conjugate base).