2013年高考化学试卷(安徽)(空白卷)
7.我国科学家研制出一中催化剂,能在室温下高效催化空气中甲醛的氧化,其反应如下:HCHO+O2————→CO2+H2O。下列有关说法正确的是A.该反应为吸热反应B.CO2分子中的化学键为非极性键C.HCHO分子中既含σ键又含π键D.每生成1.8gH2O消耗2.24LO28.实验室中某些气体的制取、收集及尾气处理装置如图所示(省略夹持和净化装置)。仅用此装置和表中提供的物质完成相关实验,最合理的选项是选项a中的物质b中的物质c中收集的气体d中的物质A浓氨水CaONH3H2OB浓硫酸Na2SO3SO2NaOH溶液C稀硝酸CuNO2H2OD浓盐酸MnO2Cl2NaOH溶液9.下列分子或离子在指定的分...
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