加热无水Na2CO3固体至熔化前,它()。A、放出CO2B、不发生化学变化C、放出O2D、生成NaHCO3

加热无水Na2CO3固体至熔化前,它()。

  • A、放出CO2
  • B、不发生化学变化
  • C、放出O2
  • D、生成NaHCO3

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