60-90的石油醚和90-120的石油醚哪个极性大些?如果爬TLC板的时候用纯的石油醚都觉得极性大了怎么办?应该用什么极性的溶剂作展开剂?
来源:学生作业帮助网 编辑:作业帮 时间:2024/07/30 20:58:52
![60-90的石油醚和90-120的石油醚哪个极性大些?如果爬TLC板的时候用纯的石油醚都觉得极性大了怎么办?应该用什么极性的溶剂作展开剂?](/uploads/image/z/1366156-28-6.jpg?t=60-90%E7%9A%84%E7%9F%B3%E6%B2%B9%E9%86%9A%E5%92%8C90-120%E7%9A%84%E7%9F%B3%E6%B2%B9%E9%86%9A%E5%93%AA%E4%B8%AA%E6%9E%81%E6%80%A7%E5%A4%A7%E4%BA%9B%3F%E5%A6%82%E6%9E%9C%E7%88%ACTLC%E6%9D%BF%E7%9A%84%E6%97%B6%E5%80%99%E7%94%A8%E7%BA%AF%E7%9A%84%E7%9F%B3%E6%B2%B9%E9%86%9A%E9%83%BD%E8%A7%89%E5%BE%97%E6%9E%81%E6%80%A7%E5%A4%A7%E4%BA%86%E6%80%8E%E4%B9%88%E5%8A%9E%3F%E5%BA%94%E8%AF%A5%E7%94%A8%E4%BB%80%E4%B9%88%E6%9E%81%E6%80%A7%E7%9A%84%E6%BA%B6%E5%89%82%E4%BD%9C%E5%B1%95%E5%BC%80%E5%89%82%3F)
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