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搜狐
21 天
【高中化学】化学实验隐藏的9大理论,快来收藏吧!
(2)量筒为粗量仪器,无“0”刻度,刻度从下往上增大。 (3)滴定管为精量仪器,“0”刻度在滴定管上端。 (4)容量瓶只有一条刻度线,只能 ...
搜狐
24 天
滴定分析操作与注意事项
进行滴定分析时,先将试样制备成溶液置于容器(通常为锥形瓶)中,在适宜的反应条件下,将滴定剂由滴定管加到被测物质的溶液中,直到两者按照一定的化学方程式所表示的计量关系完全反应为止,这时称反应到达化学计量点,简称计量点,以sp表示。
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