发布日期:2010-05-31 17:11:11
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对加热分解过氧化氢溶液的实验,小明假设:“成功率不高的原因是加热初期有大量水蒸气产生”,他设计了下列实验方案,其中不能对此假设提供较好实证的是 ( ) A、使用生石灰干燥产生的气体再检验 B、使用浓硫酸干燥产生的气体再检验 C、先用排水法收集一瓶气体,再检验气体 D、分别使用不同催化剂进行过氧化氢溶液的分解实验,检验所得气体 |