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除去CO2中的HCl和SO2气体为什么要用饱和的碳酸氢钠？饱和

2025-04-10 17:20:24

推荐回答（1个）

回答1：

因为CO2在饱和NaHCO3中溶解度不大.其中HCl会跟NaHCO3反应:NaHCO3+HCl=NaCl+CO2+H2O使得CO2溶解度降低,然後SO2也会和NaHCO3反应:NaHCO3+SO2=NaHSO3+CO2又使得溶解度降低.所以要那样除

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