某教师在课堂上用右图所示的装置来验证浓硫酸与铜是否�生反应并探讨反应所产生气体的性质.请答下列问题1通过试管乙中�生的品红溶液褪色品红 Template




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tomski某教师在课堂上用右图所示的装置来验证浓硫酸与铜是否�生反应并探讨反应所产生气体的性质.请答下列问题1通过试管乙中�生的品红溶液褪色品红 coloring