摘要:18.有4种混合溶液.分别由等体积0.1mol/L的2种溶液混合而成:①CH3COONa与HCl,②CH3COONa与NaOH,③CH3COONa与NaCl,④CH3COONa与NaHCO3.下列各项排序正确的是: A .PH:②>③>④>① B. C(CH3COO-):②>④>③>① C. 溶液中C(Na+):①>③>②>④ D. C(CH3COOH):①>④>③>②

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