Recall that an ideal buffer pairs are usually:
Weak acid + its conjugate base
Weak base+ its conjugate acid
High concentrated WA + Strong base
High concentrated WB + Strong acid
Which pair of compounds will form a buffer in aqueous solution?
a. NaCN and NaOH
b. NaCN and KCN
c. HCl and NaOH
d. HCN and NaCN
e. HCN and HCl
f. HCl and NaCl
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