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15问答网 > 亚硫酸根与硝酸根怎样反应？？？生成SO2么？？？

亚硫酸根与硝酸根怎样反应？？？生成SO2么？？？

2025-04-06 17:02:33

推荐回答（1个）

回答1：

亚硫酸的加入，使溶液里有了H+，那么相当于溶液里有HNO3，之后亚硫酸根会被硝酸氧化成硫酸再于硝酸银反应生成硫酸银。
分2个过程
首先是亚硫酸根被氧化：

3SO32-+2NO3-+2H+=3SO42-+2NO↑+H2O

之后硫酸根和银离子反应：
SO42-+2Ag+=Ag2SO4↓
最终生成黑色的硫酸银沉淀。

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