Q
ض`ĜyЧҺɫ" />
Q |
ض`ĜyЧҺɫV |
(yng)÷ |
øЧҺɫVyض`ĺ |
ԭ |
ƷӼ״̎a(b)uV^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 2.1ࣺ״ 0.015mol/L}_ҺpH6.7)70 30 2.2zyL289nm 2.3أҜ |
ԇƂ䣺 |
1. QȡԇƷ ܷQƷĩ^̖Y)0.5g鹩ԇƷ 2. ƷҺƂ ܷQȡ`ƷmӼ״Ƴÿ1mL40mgҺ 3. ԇƷҺƂ ȡƷĩ^̖Y)s0.5gܷQþFƿܼ״25mLQ1Сr̎250Wl33kHz)30ȡٷQü״a(b)pʧuV^m(x)VҺ鹩ԇƷҺ |
E |
քeȡƷҺԇƷҺ20mLעЧҺɫVxՙzyڲL289nm̎y`C21H21O5N)ķeӋ(j)京 |
īI(xin) |
A͇ˎ䣬ˎίTW(xu)I(y)磬2005һp139 |