摘要:用过量的H2SO4.NaOH.NH3.H2O.NaCl等溶液.按题12图所示步骤分开五种离子.则溶液①.②.③.④是 A. ①NaCl ②NaOH ③NH2·H2O ④H2SO4 B. ①H2SO4 ②NaOH ③NH3·H2O ④NaCl C. ①H2SO4 ②NH3·H2O ③NaOH ④NaCl D. ①NaCl ②NH3·H2O ③NaOH ④H2SO4

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