摘要:23.用过量的H2SO4.NaOH.NH3·H2O.NaCl等溶液.按图示步骤分开五种离子.则溶液①.②.③.④是 : A.①NaCl ②NaOH ③NH3·H2O ④ H2SO4 B.①H2SO4 ②NaOH ③NH3·H2O ④NaCl C.①NaCl ②NH3·H2O ③NaOH ④H2SO4 D.①H2SO4 ②NH3·H2O ③NaOH ④NaCl
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