【 以下文字转载自 Paper 讨论区 】
发信人: bikese8815 (zyousan), 信区: Paper
标  题: 弱问，关于溶液浓度单位缩写（M or N）的问题
发信站: 水木社区 (Mon Sep 20 23:37:09 2010), 站内

发信人: bikese8815 (zyousan), 信区: DCS.THU
标  题: 弱问，关于溶液浓度单位缩写（M or N）的问题
发信站: 水木社区 (Mon Sep 20 23:36:16 2010), 站内

确实是很弱的问题，请轻拍。

下面这段话（出自Carbon 48 (2010) 1252–1261）中，出现了两种浓度单位缩写：M和N。
由文中可知，M表示摩尔浓度，0.05 M是0.05 mol/L。但是，我不能确定N是什么浓度，是质量浓度吗？
谢谢！

The general titration procedure was carried out based on Boehm’s method [5]. A known mass of ca. 1.5 g carbon was added to 50.00 mL of one of three reaction bases of 【0.05 M】 concentration: NaHCO3 (Sigma, 99.5%), Na2CO3 (Anachemia, ACS Reagent) and NaOH (Sigma-Aldrich, 99.998%). In Boehm’s early studies [8] he stated that 【0.05 N】 solutions should be used; however, later on Boehm stipulated that 【0.05 M】 (molar) solutions should be used, which is particularly significant for Na2CO3, which is a diprotic base [5].
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FROM 122.193.5.*