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Gaokao Chemistry Practice Question

以熔融盐为电解液, 以含 $\mathrm{Cu} $、$ \mathrm{Mg}$ 和 $\mathrm{Si}$ 等的铝合金废料为阳极进行电解, 实现 $\mathrm{Al}$ 的 再生。该过程中

  1. A.阴极发生的反应为 $\mathrm{Mg}-2 \mathrm{e}^{-}=\mathrm{Mg}^{2+}$
  2. B.阴极上 $\mathrm{Al}$ 被氧化
  3. C.在电解槽底部产生含 $\mathrm{Cu}$ 的阳极泥
  4. D.阳极和阴极的质量变化相等

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