加碳酸氢钠或氢氧化钠溶液.不分层的是苯甲酸.你说用次碘酸钠是一个碘仿反应,
对甲氧基苯乙酮与次碘酸钠反应生成碘仿,黄色固体;而基苯甲酸无此现象
猜你喜欢
- 1动量守恒定律中的外力包括重力吗
- 2Would he likes to an egg的肯否定回答是什么?
- 3I read a book about Dr Sun Yatsen at the school library()yesterday afternoon a:on b:in
- 4测定水中硬度时,缓冲溶液中加Mg-EDTA盐的作用是什么?
- 5abcde五种含硅元素的物质
- 6They must finish the work today.改为一般疑问句 They have to __get _up_early_ .对划线部分提问
- 7.-Have you finished your homework.–Not ____
- 841.某校初三年级春游,现有36座和42座两种客车供选择租用,若只租用36座客车若干辆,则正好坐满;若只租用42座客车,则能少租一辆,且有一辆车没有坐满,但超过30人;已知36座客车每辆租金400元,42座客车每辆租金440元.
- 9nice work i took you more than 10 minutes to do the maths problem
- 10The students are doing exercise in the playground.