Q
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Q |
ض`Ĝy(c)ЧҺɫV |
(yng)÷ |
øЧҺɫVy(c)ض`ĺ |
ԭ |
ƷӼ״̎a(b)uV^(gu)m(x)VҺM(jn)ЧҺɫVxM(jn)ɫVxՙzy(c)ڲL(zhng)289nm̎zy(c)`ֵӋ(j)京 |
ԇ |
1. ״ 2. 0.015mol/L}_ҺpH6.7)ȡ1.58g0.76gˮ1000mLܽ⣬ÚcԇҺ{(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(c) 2ɫVl 2.1(dng)ࣺ״ 0.015mol/L}_ҺpH6.7)70 30 2.2zy(c)L(zhng)289nm 2.3أҜ |
ԇƂ䣺 |
1. QȡԇƷ ܷQƷĩ^(gu)̖(ho)Y)0.5g鹩ԇƷ 2. (du)ƷҺƂ ܷQȡ`(du)ƷmӼ״Ƴÿ1mL40mgҺ 3. ԇƷҺƂ ȡƷĩ^(gu)̖(ho)Y)s0.5gܷQþFƿܼ״25mLQ1Сr(sh)̎250Wl33kHz)30犣ȡ䣬ٷQü״a(b)pʧuV^(gu)m(x)VҺ鹩ԇƷҺ |
E |
քeȡ(du)ƷҺԇƷҺ20mLעЧҺɫVxՙzy(c)ڲL(zhng)289nm̎y(c)`C21H21O5N)ķeӋ(j)京 |
īI(xin) |
A͇(gu)ˎ(gu)ˎίT(hu)W(xu)I(y)2005棬һp139 |