制印刷电路时常用氯化铁溶液作为“腐蚀液”:发生的反应为2FeCl3+Cu

制印刷电路时常用氯化铁溶液作为“腐蚀液”:发生的反应为2FeCl3+Cu=2FeCl2+CuCl2,向盛有氯化铁溶液的烧杯中同时加入铁粉和铜粉,反应结束后,下列结果不可能出现的是    (    )

A.烧杯中有铜无铁         B.烧杯中有铁无铜

C.烧杯中铁、铜都有        D.烧杯中铁、铜都无

答案

B

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