Q
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Q |
a(chn)(f)wAĜyֹȷ |
(yng)÷ |
÷ֹȷya(chn)DwA}ˮKAӋ) mгˎa(chn)Dw |
ԭ |
ԇƷ(jng)Ҵ̎Һˮԡܼ0.1mol/L}Һʹܽ⣬õƳɹԇҺԇƷҺcƷҺ(jng)̎-ҊֹȷڲL525nm̎քeyնÿհҺȷքepȥƷcԇƷӋÿA}ˮKAӛ3.0mg |
ԇ |
1. 0.1mol/L}Һ 2. 2%t@Һ |
xO(sh)䣺 |
ҊֹӋ |
ԇƂ䣺 |
1. ƷҺƂ ܷQȡ}ˮKAƷm0.1mol/L}ҺƳÿ1mL1mgҺ 2. ԇƷҺƂ ȡb(ni)mм(x)ȡs12gܷQþFƿУܼҴ50mL̎30犺ȡm(x)VҺ25mL50mLˮԡܼ0.1mol/L}Һ10mLʹܽ עۙ-c_ҺpH 4.0) Һȡۙ21goˮۙ19.2gˮʹܽ1000mLñ(ni)档 Һȡc71.63gˮʹܽ1000mL ȡҺ61.15mLcҺ38.55mL עܷQȡϵָQȡ(yng)(zhn)_Qȡǧ֮һȡϵָȡweĜ(zhn)_ȑ(yng)χҘ(bio)(zhn)ЌԓweҺܵľҪ |
E |
ȡ ԇƷҺcƷҺӻ̿0.5gˮԡϼӟ1V^VҺքe25mLƿ0.1mol/L}Һ10mLִϴ͞VϴҺͬһƿȡ0.1mol/L}Һ20mLһ25mLƿУհҺܼƵ2%t@Һ3mL, u 0.1mol/L}Һϡ̶uڱԡз1СrøVV^ȡm(x)VҺ0.1mol/L}Һհ-ҊֹȷڲL525nm̎քeyնÿհҺȷքepȥƷcԇƷӋá עֹȷ(yng)ƹԇƷͬ܄錦1cmʯӢճءնIJLyLһ㹩ԇƷնx(sh)ڣ..֮g`^СxĪMpȑ(yng)СڹԇƷՎİ댒tyõնƫMpȵx(yng)Ԝp٪MpȕrԇƷնȲӞ(zhn)ճغ܄пհ˜yԇƷնȺ(yng)pȥհx(sh)Ӌ㺬 |
īI(xin) |
A͇ˎˎίTW(xu)I(y)2005һp.446 |