Q
a(chn)(f)wAĜy(c)ֹ⡭" />
Q |
a(chn)(f)wAĜy(c)ֹȷ |
(yng)÷ |
÷ֹȷy(c)a(chn)DwA}ˮKAӋ(j)) mгˎa(chn)Dw |
ԭ |
ԇƷ(jng)Ҵ̎Һˮԡܼ0.1mol/L}ҺʹܽõƳɹԇҺԇƷҺc(du)ƷҺ(jng)̎-ҊֹȷڲL(zhng)525nm̎քey(c)նȣÿհҺȷքepȥ(du)ƷcԇƷӋ(j)ÿA}ˮKAӛ3.0mg |
ԇ |
1. 0.1mol/L}Һ 2. 2%t@Һ |
xO(sh)䣺 |
ҊֹӋ(j) |
ԇƂ䣺 |
1. (du)ƷҺƂ ܷQȡ}ˮKA(du)Ʒm0.1mol/L}ҺƳÿ1mL1mgҺ 2. ԇƷҺƂ ȡb(xing)(ni)mм(x)ȡs12gܷQþFƿܼҴ50mL̎30犺ȡm(x)VҺ25mL50mLУˮԡܼ0.1mol/L}Һ10mLʹܽ עۙ-c_ҺpH 4.0) Һȡۙ21goˮۙ19.2gˮʹܽ1000mLñ(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)ƷҺӻ̿0.5gˮԡϼӟ1裬V^VҺքe25mLƿ0.1mol/L}Һ10mLִϴ͞VϴҺͬһƿȡ0.1mol/L}Һ20mLһ25mLƿհҺܼƵ2%t@Һ3mL, u 0.1mol/L}Һϡ̶ȣuڱԡз1Сr(sh)øVV^ȡm(x)VҺ0.1mol/L}Һհ-ҊֹȷڲL(zhng)525nm̎քey(c)նȣÿհҺȷքepȥ(du)ƷcԇƷӋ(j)㣬 עֹȷ(yng)ƹԇƷͬ܄錦(du)գ1cmʯӢճնIJL(zhng)y(c)L(zhng)һ㹩ԇƷնx(sh)ڣ..֮g`^СxĪMpȑ(yng)СڹԇƷՎİ댒ȣty(c)õնƫMpȵx(yng)Ԝp٪Mpȕr(sh)ԇƷնȲӞ(zhn)ճغ܄пհ˜y(c)ԇƷնȺ(yng)pȥհx(sh)Ӌ(j)㺬 |
īI(xin) |
A͇(gu)ˎ(gu)ˎίT(hu)W(xu)I(y)2005һp.446 |