作者dougho (Doug)
看板Chemistry
标题一些titration跟percipitation的问题><
时间Tue Mar 7 15:00:19 2006
我有一些题目想要问个为大大><
因为我全部都不会算...
1. You have a solution of 0.800 M lactic acid (Ka = 1.4 x 10-4).
Calculate the pH after adding 0.10 mol HCl to 1.0 liter of the best buffer.
2. A solution contains 0.018 moles each of I-, Br-, and Cl-.
When the solution is mixed with 200 mL of 0.24 M AgNO3,
how much AgCl(s) precipitates out?
Ksp AgI = 1.5 x 10-16
Ksp AgBr = 5.0 x 10-13
Ksp AgCl = 1.6 x 10-10
3. A 50.0-mL sample of 2.0 x 10-4 M CuNO3 is added to 50.0 mL of 4.0 M NaCN.
Cu+ reacts with CN- to form the complex ion Cu(CN)3(2-):
Cu(CN)3(2-) -> Cu+ + 3CN- K = 1.0 x 10-9
The concentration of CN- at equilibrium is?
请力害的大大帮帮忙巴！！！
谢谢搂~^^
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