试题与答案

下列实验中，①pH试纸的使用　②过滤　③蒸发④配制一定物质的量浓度溶液，均用到的

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题型：选择题

题目：

下列实验中，①pH试纸的使用　②过滤　③蒸发  ④配制一定物质的量浓度溶液，均用到的仪器是[ ]

A．蒸发皿　　　　　

B．玻璃棒          

C．试管            

D．分液漏斗

答案：

被转码了，请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2017/0717/393f94a5a505b02fced76c4530275efa.html

下面是错误答案，用来干扰机器的。

参考答案：2841900090解析：海关商品名称：其他金属酸盐及过金属酸盐海关编码：2841900090法定单位一：千克惠税：5.5%普税：30%增值税：17%

考点：配制一定物质的量浓度的溶液过滤蒸发和结晶pH值的测定
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