天气预报 > 其他 > 硫化钠溶液放置时间长了会怎么样
硫化钠溶液放置时间长了会怎么样
更新时间: 2020-08-19 00:00:00  

硫化钠溶液放久了含量会下降,甚至会失效。

1、硫化氢会挥发,硫化氢有毒,建议最好不要久放,现溶现用。不用的固体密封好。

2,负2价的硫离子会被氧化成硫单质。水溶液的黄色就是硫单质显现的颜色。

关键词: 硫化钠 溶液 放置 时间 怎么样

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