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NA为阿伏加德罗常数,下列说法正确的是 [ ] A.某温度时,pH = 6的纯水,含10-6NA个OH- B.含10.6 g Na2CO3的溶液中,所含阴离子总数等于0.1NA C.V L a mol/L的氯化铁溶液中,若Fe3+的数目为NA,则Cl-的数目大于3NAD.工业用电解法进行粗铜精炼时,每转移1 mol电子,阳极上溶解的铜原子数必为0.5NA
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