实验室制氨气,试管口棉花的作用是什么?
实验室制氨气,试管口棉花的作用是什么?
其他人气:149 ℃时间:2019-11-16 06:56:19
优质解答
防止生成的氨气与空气发生对流,使收集到的氨不纯;抑制氨气逸出;避免污染空气
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