取�量碳酸氢钠nahco3粉末,用如图装置进行实验,充分加热后�现:大试管中管口有水珠出现,管底有白色固体残留;小试管中澄清石灰水变�浊 Template




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tomski取�量碳酸氢钠nahco3粉末,用如图装置进行实验,充分加热后�现:大试管中管口有水珠出现,管底有白色固体残留;小试管中澄清石灰水变�浊 coloring