作者g1cheerfor (DARK)
看板NCHU-ENVE102
标题[讨论] 环化问题欧!!
时间Mon Nov 29 18:04:25 2010
他第2题的问题上课有教...但我却似懂非懂!!!
Vp Vmo 我忘了各是啥意思 !!
2. A sample of water has a pH of 9.0. 200 mL of the water require 1.1 mL
of 0.02 N H2SO4 to titrate it to the phenolphthalein endpoint and 22.9 mL
of 0.02 N H2SO4 to titrate it further to the methyl orange endpoint.
We can now determine the major alkalinity species from the titration values,
VP = 1.1 mL and Vmo = 22.9 mL
(a) Since Vmo > Vp, the major species present are _________________
(b) What are the total alkalinities of the sample in meq/liter and in mg/L as
CaCO3?
希望有人提供宝贵的见解 由衷感谢!!
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