A.
等pH值的氨水、KOH溶液、Ba(OH) 2 溶液中: c (NH 4 + )= c (K + )=2 c (Ba 2+ )
B.
0.1 mol/L 的CH 3 COONa溶液中: c (CH 3 COO - ) > c (Na + ) > c (OH - ) > c (H + )
C.
常温时向NH 4 HSO 4 溶液中滴加NaOH溶液至pH=7: c (NH 4 + )+ c (Na + )= c (SO 4 2 - )
D.
将10 m L 0.1 mol/L Na 2 CO 3 溶液逐滴滴加到10 mL 0.1 mol/L盐酸中: c (Na + )> c (Cl - )> c (HCO 3 - )> c (CO 3 2 - )