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F(xin)ڵλã t(y)W(xu)ȫھ > ˎW(xu)Փ > ˎ > :a(chn)(f)wAĜy(c)ֹȷ

a(chn)(f)wAĜy(c)ֹȷ

t(y)ˎ(sh)(j)(k) ˎW(xu)Փ a(chn)(f)wAĜy(c)ֹȷ
Q
a(chn)(f)wAĜy(c)ֹȷ
(yng)÷

÷ֹȷy(c)a(chn)DwA}ˮKAӋ(j))

mгˎa(chn)Dw

ԭ

ԇƷ(jng)Ҵ•̎Һˮԡɣܼ0.1mol/L}Һʹܽ⣬õƳɹԇҺԇƷҺc(du)ƷҺ(jng)̎-Ҋ(jin)ֹȷڲL(zhng)525nm̎քey(c)նÿհҺȷքepȥ(du)ƷcԇƷȣӋ(j)áÿA}ˮKAӛ3.0mg

ԇ

1. 0.1mol/L}Һ

2. 2%t@Һ

xO(sh)䣺

Ҋ(jin)ֹӋ(j)

ԇƂ䣺

1. (du)ƷҺƂ

ܷQȡ}ˮKA(du)Ʒm0.1mol/L}ҺƳÿ1mL1mgҺ

2. ԇƷҺƂ

ȡb(xing)ƒ(ni)mм(x)ȡs12gܷQþFƿܼҴ50mL•̎30犺ȡm(x)VҺ25mL50mLˮԡɣܼ0.1mol/L}Һ10mLʹܽ

עۙ-c_ҺpH 4.0)

Һȡۙ21go(w)ˮۙ19.2gˮʹܽ1000mLñ(ni)

Һȡc71.63gˮʹܽ1000mL

ȡҺ61.15mLcҺ38.55mL

עܷQȡϵָQȡ(yng)(zhn)_Qȡǧ֮һȡϵָȡweĜ(zhn)_ȑ(yng)χ(gu)Ҙ(bio)(zhn)Ќ(du)ԓweҺܵľҪ

E

ȡ ԇƷҺc(du)ƷҺӻ̿0.5gˮԡϼӟ1V^(gu)VҺքe25mLƿУ0.1mol/L}Һ10mLִϴ͞VϴҺͬһƿȡ0.1mol/L}Һ20mLһ25mLƿհҺܼƵ2%t@Һ3mL, u򣬼 0.1mol/L}Һϡ̶uڱԡз1Сr(sh)øVV^(gu)ȡm(x)VҺ0.1mol/L}Һհ-Ҋ(jin)ֹȷڲL(zhng)525nm̎քey(c)նÿհҺȷքepȥ(du)ƷcԇƷӋ(j)㣬

עֹȷ(yng)ƹԇƷͬ܄錦(du)1cmʯӢճءնIJL(zhng)y(c)L(zhng)һ㹩ԇƷնx(sh)ڣ..֮g`^СxĪMpȑ(yng)СڹԇƷՎİ댒ty(c)õնƫMpȵx񣬑(yng)Ԝp٪Mpȕr(sh)ԇƷնȲӞ(zhn)ճغ܄пհ˜y(c)ԇƷնȺ(yng)pȥհx(sh)Ӌ(j)㺬

īI(xin)

A񹲺͇(gu)ˎ(gu)ˎίT(hu)W(xu)I(y)磬2005һp.446

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