实验室常用亚硫酸钠na2so3固体与稀硫酸在常温下反应制二氧化硫气体.二氧化硫气体是无色有刺激性气�的有毒气体它的密度比空气大可溶于水 Template




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tomski实验室常用亚硫酸钠na2so3固体与稀硫酸在常温下反应制二氧化硫气体.二氧化硫气体是无色有刺激性气�的有毒气体它的密度比空气大可溶于水 coloring