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[求助] HCl与Na2CO3及NaHCO3反应优先性与速率的问题咨询

我们用Na2CO3及NaHCO3吸收尾气中的酸性气体(主要是HCl及光气).
用的是二者的混合溶液(其实是补充的NaOH,因为尾气中还有大量CO2,所以相当于是Na2CO3及NaHCO3的混合液),因为相对来说,HCl及光气很少,不足.
那么HCl与光气优先与Na2CO3反应,然后再与NaHCO3反应,问题来了
HCl与Na2CO3反应生成NaHCO3的速率快还是HCl与NaHCO3反应生成CO2的速率快呢?求解?
因为如果HCl与Na2CO3反应生成NaHCo3的速率快我就没必要想着把吸收液换成纯的NaHCO3了.
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