A . 新制氯水中加入固体NaOH:c(Na+) = c(Cl-) + c(ClO-) + c(OH)
B . pH = 8.3的NaHCO3溶液:c(Na+) > c(HCO3-) > c(CO32-) > c(H2CO3)
C . pH = 11的氨水与pH = 3的盐酸等体积混合:c(Cl-) = c(NH4+) > c(OH) = c(H+)
D . 0.2mol/LCH3COOH溶液与0.1mol/LNaOH溶液等体积混合:2c(H+) – 2c(OH-) = c(CH3COO-) – c(CH3COOH)