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Gaokao Chemistry Practice Question

实验室制备下列气体, 能实现的是

  1. A.$\mathrm{Cl}_{2}: \mathrm{MnO}_{2}$ 与稀 $\mathrm{HCl}$ 溶液混合
  2. B.$\mathrm{C}_{2} \mathrm{H}_{4}: \mathrm{CaC}_{2}$ 与 $\mathrm{H}_{2} \mathrm{O}$ 混合
  3. C.$\mathrm{CO}_{2}$ : 加热饱和 $\mathrm{NaHCO}_{3}$ 溶液
  4. D.$\mathrm{SO}_{2}: \mathrm{Cu}$ 丝与稀 $\mathrm{H}_{2} \mathrm{SO}_{4}$ 混合

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