Which one of the following combinations cannot produce a buffer solution?
a. HNO2 and NaNO2
b. HCN and NaCN
c. HClO4 and NaClO4
d. NH3 and (NH4)2SO4
e. NH3 and NH4Br
Answer: C
Which one of the following combinations cannot produce a buffer solution?
a. HNO2 and NaNO2
b. HCN and NaCN
c. HClO4 and NaClO4
d. NH3 and (NH4)2SO4
e. NH3 and NH4Br
Answer: C