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Gaokao Chemistry Practice Question

4.（6 分）下列实验操作能达到实验目的是（）

  1. A.用长颈漏斗分离出乙酸与乙醇反应的产物
  2. B.用向上排空气法收集铜粉与稀硝酸反应产生的 NO
  3. C.配制氯化铁溶液时, 将氯化铁溶解在较浓的盐酸中再加水稀释
  4. D.将 $\mathrm{Cl}_{2}$ 与 $\mathrm{HCl}$ 混合气体通过饱和食盐水可得到纯净的 $\mathrm{Cl}_{2}$

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