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Q |
ض`ĜyЧҺɫV |
(yng)÷ |
øЧҺɫVyض`ĺ |
ԭ |
ƷӼ״̎a(b)أuV^m(x)VҺM(jn)ЧҺɫVxM(jn)ɫVxՙzyڲL289nm̎zy`ֵӋ(j)京 |
ԇ |
1. ״ 2. 0.015mol/L}_ҺpH6.7)ȡ1.58g0.76gˮ1000mLܽÚcԇҺ{(dio)(ji)pHֵ6.7 |
xO(sh)䣺 |
1 x 1.1 ЧҺɫVx 1.2 ɫV ʮIϹz䄩Փ唵(sh)`Ӌ(j)㑪(yng)6000 1.3 ՙzy 2ɫVl 2.1(dng)ࣺ״ 0.015mol/L}_ҺpH6.7)70 30 2.2zyL289nm 2.3أҜ |
ԇƂ䣺 |
1. QȡԇƷ ܷQƷĩ^̖(ho)Y)0.5g鹩ԇƷ 2. (du)ƷҺƂ ܷQȡ`(du)ƷmӼ״Ƴÿ1mL40mgҺ 3. ԇƷҺƂ ȡƷĩ^̖(ho)Y)s0.5gܷQþFƿУܼ״25mLQ1Сr(sh)̎250Wl33kHz)30ȡ䣬ٷQü״a(b)pʧuV^m(x)VҺ鹩ԇƷҺ |
E |
քeȡ(du)ƷҺԇƷҺ20mLעЧҺɫVxՙzyڲL289nm̎y`C21H21O5N)ķeӋ(j)京 |
īI(xin) |
A͇ˎ䣬ˎίT(hu)W(xu)I(y)2005һp139 |