摘要:18.用过量的H2SO4.NaOH.NH3·H2O.NaCl等溶液.按右 图所示步骤分开五种离子.则溶液①.②.③.④是 A.①NaCl ②NaOH ③NH3·H2O ④H2SO4 B.①NaCl ②NH3·H2O ③NaOH ④H2SO4 C.①H2SO4 ②NaOH ③NH3·H2O ④NaCl D.①H2SO4 ②NH3·H2O ③NaOH ④NaCl
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