Which of the following will form a buffer solution?
0.5MNaHCO_(3)
and
0.5MNa_(2)CO_(3)
0.5 M HCl and 0.5 M NaCl
0.5MCH_(3)(C)/(O)O H
0.5MCH_(3)(C)/(O)O Na
0.5MNH_(3)
0.5MNH_(4)Cl
0.5MH_(2)SO_(4)
0.5MNaHSO_(4)