论文中说"试剂A dissolved in 6 mL of 2 M NaOH was slowly added".其中的2
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论文中说"试剂A dissolved in 6 mL of 2 M NaOH was slowly added".其中的2
论文中说"试剂A dissolved in 6 mL of 2 M NaOH was slowly added".其中的2
论文中说"试剂A dissolved in 6 mL of 2 M NaOH was slowly added".其中的2
M是克分子浓度,即一升溶液中所含溶质的克分子数就是这种溶液的克分子浓度,用符号M表示,现在已删除不用.
关于这方面的标准可以参考:
GB/T601-2002《化学试剂标准滴定溶液的制备》
参考资料:中国石油和化工标准与质量
摩尔,单位http://baike.baidu.com/view/44388.htm
摩尔,中学化学里有的,不用解释什么出处,是化学里的计量单位
是单位摩尔
http://zhidao.baidu.com/question/87254460.html
一看就明了
2M就是指浓度为2mol/L的溶液。
注意和2N区分。2N指2当量的溶液。
我想自己配过溶液的,都应该知道这个概念吧。
应该是mol,是说浓度,mol/L吧
摩尔 单位
恩恩~~~
M 是溶液常用的浓度单位,称为摩尔浓度 即mol/L
例如2M NaOH溶液
NaOH 的摩尔质量约为40g/mol,
秤取2mol的NaOH固体 80g,溶解在2L纯水里就是2M的NaOH溶液了。
这句话就是说“缓慢加入浓度为2M的NaOH溶液6ml”
mol/ml
论文中说试剂A dissolved in 6 mL of 2 M NaOH was slowly added.其中的2
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