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Gaokao Chemistry Practice Question

硫代碳酸钠能用于处理废水中的重金属离子, 可通过如下反应制备: $2 \mathrm{NaHS}(\mathrm{s})+\mathrm{CS}_{2}(\mathrm{l})=\mathrm{Na}_{2} \mathrm{CS}_{3}(\mathrm{~s})+\mathrm{H}_{2} \mathrm{~S}(\mathrm{~g})$, 下列说法正确的是

  1. A.$\mathrm{Na}_{2} \mathrm{CS}_{3}$ 不能被氧化
  2. B.$\mathrm{Na}_{2} \mathrm{CS}_{3}$ 溶液显碱性
  3. C.该制备反应是熵减过程
  4. D.$\mathrm{CS}_{2}$ 的热稳定性比 $\mathrm{CO}_{2}$ 的高

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