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Gaokao Chemistry Practice Question

2. (6 分) 已知 $\mathrm{N}_{\mathrm{A}}$ 是阿伏加德罗常数的值,下列说法错误的是()

  1. A.$3 \mathrm{~g}^{3} \mathrm{He}$ 含有的中子数为 $1 \mathrm{~N}_{\mathrm{A}}$
  2. B.$1 \mathrm{~L} 0.1 \mathrm{~mol} \cdot \mathrm{L}^{-1}$ 磷酸钠溶液含有的 $\mathrm{PO}_{4}{ }^{-}$数目为 $0.1 \mathrm{~N}_{\mathrm{A}}$
  3. C.$1 \mathrm{molK}_{2} \mathrm{Cr}_{2} \mathrm{O}_{7}$ 被还原为 $\mathrm{Cr}^{3+}$ 转移的电子数为 $6 \mathrm{~N}_{\mathrm{A}}$
  4. D.$48 \mathrm{~g}$ 正丁烷和 $10 \mathrm{~g}$ 异丁烷的混合物中共价键数目为 $13 \mathrm{~N}_{\mathrm{A}}$

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