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为什么有的浓硝酸会发黄
更新时间: 2020-09-19 00:00:00  

因为浓硝酸不稳定,见光或受热会分解生成红棕色的NO2,NO2溶于浓硝酸中,溶入的量很少,使浓硝酸呈黄色。

纯浓硝酸是无色有刺激性气味的液体,易挥发,可以任意比例溶于水,混溶时与硫酸相似,会释放出大量的热,所以需要不断搅拌,并且只能把浓硝酸加入水中而不能反过来。

关键词: 为什么 有的 硝酸 发黄

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