A buffer contains significant amounts of a weak acid and a salt containing its conjugate base. The acid consumes any added base, and the base consumes any added acid. In this way, a buffer resists pH change. Strong acids, strong bases, two bases, or two acids cannot form a buffer on their own.
Which set of compounds would form a buffer in aqueous solution?
State which one is a buffer or not a buffer:
a) NaCl and KCl
b) HCN and NaF
c) NaBr and KBr
d) HCOOH and HCOOK
e) KF and KOH
f) HBr and NaBr
g) HCN and KCN