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1、选择题 下列实验操作正确的是( )
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时间:2017-08-22 14:35:19
1、选择题 下列实验操作正确的是( )
A.600)makesmallpic(this,600,1800);\' alt=\"\" src=\"http://www_php168_com/91files/2016060706/1lyrgduusex.png\">
向容量瓶中转移
B.600)makesmallpic(this,600,1800);\' alt=\"\" src=\"http://www_php168_com/91files/2016060706/qsgls3v4ian.png\">
制氢氧化亚铁
C.600)makesmallpic(this,600,1800);\' alt=\"\" src=\"http://www_php168_com/91files/2016060706/rfpqit5jwai.png\">
碳酸氢钠受热分解
D.600)makesmallpic(this,600,1800);\' alt=\"\" src=\"http://www_php168_com/91files/2016060706/lqitpfmliwo.png\">
萃取、分液
2、选择题 某化学兴趣小组设计了下列四个实验装置,试图通过观察实验现象说明CO2与NaOH溶液发生了反应。其中肯定无法达到实验目的的是
[? ]
A.600)makesmallpic(this,600,1800);\' style=\"VERTICAL-ALIGN: middle\" src=\"http://www_php168_com/91files/2016060706/ompwfeygxrt.gif\">
B.600)makesmallpic(this,600,1800);\' style=\"VERTICAL-ALIGN: middle\" src=\"http://www_php168_com/91files/2016060706/3d1rcrwpvi5.gif\">
C.600)makesmallpic(this,600,1800);\' style=\"VERTICAL-ALIGN: middle\" src=\"http://www_php168_com/91files/2016060706/vx3c1344ama.gif\">
D.600)makesmallpic(this,600,1800);\' style=\"VERTICAL-ALIGN: middle\" src=\"http://www_php168_com/91files/2016060706/dh54bfiqz00.gif\">
3、选择题 下列实验能达到预期目的的是
[? ]