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58问答库 > 亚硫酸钾溶液与稀盐酸反应的化学方程式。

亚硫酸钾溶液与稀盐酸反应的化学方程式。

2025-04-04 15:05:32

推荐回答（1个）

回答（1）：

少量时：K2SO3+HCl=NaCl+NaHSO3.过量时：K2SO3+HCl=2NaCl+H2O+SO2

(1）当亚硫酸钾过量时，反应生成亚硫酸氢钾和氯化钾。
（2）当亚硫酸钾不过量时，，生成亚硫酸和氯化钾，亚硫酸不稳定，在常温和加热状态下会分解为二氧化硫和水，二氧化硫是气体。

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