ijW(xu)dȤСM̽Fcķ(yng),O(sh)Ӌ(j)ˈD1D2ʾbM(jn)Ќ(sh)(yn)
1f(shu)SO2wa(chn)Č(sh)(yn)F(xin)
2D2Ќ(do)eҪÞ
3bЈD2еNaOHҺSO2βֹȾ猢QKMnO4Һͬӿ_(d)Ŀģԇ(xi)KMnO4ҺcSO2(yng)ĻW(xu)ʽ
4(du)ȃ(sh)(yn)byl(f)F(xin)D2bóܸõжwSO2ֹȾh(hun)߀һ(g)dz@ă(yu)c(din)J(rn)
5(yng)һΕr(sh)gֹͣ(yng)sz^ιȡAԇеҺ뵽mˮԇԇxӵijɷNܣ
ֻFe3+ֻFe2+ Fe3+Fe2+
_J(rn)Һijɷ֣xԇ
AϡHClҺ | Bϡ | CKSCNҺ | DKMnO4Һ |
(sh)(yn)E | (sh)(yn)F(xin)Y(ji)Փ |
1ȡһ֧ԇμ1-2mLԇҺԇеμӎKSCNҺ | 1 tf(shu) 2 tf(shu)ҺдFe3+t |
2 | |
1BƷtҺɫ 1֣
2ֹͣӟr(sh)ֹܷƽ≺(qing)𰸾ɣ2֣
32KMnO4+5SO2+2H2O=K2SO4+2MnSO4+2H2SO42֣
4ڿƷ(yng)İl(f)ֹͣ 2֣
5
(sh)(yn)E
(sh)(yn)F(xin)Y(ji)Փ1ȡһ֧ԇμ1-2mLԇҺԇеμӎKSCNҺ 1](mi)^쵽Һɫ@׃tf(shu)1֣
2^쵽ҺɫD(zhun)tɫtf(shu)ҺдFe3+t1֣2 ȡһ֧ԇܣ1-2mLԇҺz^ιεμKMnO4Һ 1֣ μKMnO4ҺҺϼtɫɫtf(shu)ҺкFe2+f(shu)μKMnO4ҺҺϼtɫtf(shu)ҺЛ](mi)Fe2+f(shu)5Fe2+ + MnO4- +8H+ = 5Fe3+ + Mn2+ +4H2O 2֣
ԇ}1ʹƷtҺɫf(shu)SO2wa(chn)Č(sh)(yn)F(xin)ǣBƷtҺɫ
2ֹͣӟr(sh)bF͝ԇЉ(qing)pС@һ(do)ֹܷƽ≺(qing)
32KMnO4+5SO2+2H2O=K2SO4+2MnSO4+2H2SO42֣
4(yng)_(ki)ʼFzһ|(yng)ֹͣr(sh)Fzx@ӱڿƷ(yng)İl(f)ֹͣ
5Fxc軯⛷(yng)ѪtɫҺôˁ(li)z(yn)r(ji)Fxӣr(ji)Fxӵęz(yn)ǵ߀ԭFxӱiȻ軯⛁(li)M(jn)д_
c(din)Fxәz(yn)P(gun)֪R(sh)
ĿлW(xu) (li)Դ }ͣ(sh)(yn)}
ijW(xu)СMbÌ(du)F仯|(zh)M(jn)̽شP(gun)(wn)}
1ԓСMͬW(xu)ƵÚF^L(zhng)r(sh)gDaʾbÌ(du)M(jn)в
ijͬW(xu)IJǣȊAoֹˮAKʹA_(ki)ʼ(yng)(sh)(yn)B^쵽ĬF(xin)
ڞ_(d)(sh)(yn)?zi)_IJ
Bаl(f)(yng)xӷʽ
2(dng)bõČ(sh)(yn)Y(ji)ȡA܃(ni)(yng)õҺ^՚СɺõFeSO4ٸߜџP(gun)búͲȥ¼tɫwֽr(sh)a(chn)ĚwDbʾbͨ^(gu)ϴbY(ji)ԇܼ׃(ni)F(xin)ɫԇ҃(ni)ƷtҺtɫȥش
÷ʽʾԇܼa(chn)ɫԭ
ڞ(yn)CtɫwɷM(jn)²
ۈDbбbõ
ܸ(j)(sh)(yn)F(xin)(xi)A܃(ni)Һɺڸߜџֽr(sh)l(f)(yng)ĻW(xu)ʽ
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ĿлW(xu) (li)Դ }ͣ(sh)(yn)}
F(xin)NaHCO3Na2CO3xH2OĻ˜y(c)xֵijͬW(xu)DʾbM(jn)Ќ(sh)(yn)(CaCl2AʯҾ)
(1)Abõ:________________________________________________________________
(2)Bbõ:_______________________________________________________________
(3)Cbõ:_________________________________________________________________
(4)bAԇbNaHCO3Na2CO3xH2OĻ3.7 gþƾӟᵽ(yng)ȫ˕r(sh)B1.89gC0.22 gtxֵ_(ki)_____
(5)ԓb߀Ǻʹy(c)Y(ji)ƫС(yng)θM(jn)________ʲô___________________________________________________________________________________
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ĿлW(xu) (li)Դ }ͣ(sh)(yn)}
ijоСMDb̽SO2Fe(NO3)3Һķ(yng)֪10 molL1Fe(NO3)3ҺpH1
Ո(qng)ش
1bAз(yng)ĻW(xu)ʽ______________________________
2ų՚⌦(du)(sh)(yn)ĸɔ_μӝ֮ǰ(yng)M(jn)еIJ_______________________________
3bBЮa(chn)˰ɫɷ________
4BЮa(chn)ɫԭ
1SO2cFe3ԗlNO3(yng)
2SO2cFe3(yng)
3ԗlSO2cNO3(yng)
ٰ2bBз(yng)xӷʽ_________Cԓ_(yng)M(jn)һ_J(rn)________
ڰ3ֻ茢bBеFe(NO3)3ҺQweҺͬlM(jn)Ќ(sh)(yn)(yng)xԇ________(ĸ)
a01 molL1ϡ
b15 molL1Fe(NO3)2Һ
c60 molL1 NaNO302 molL1}weϵҺ
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ĿлW(xu) (li)Դ }ͣ(sh)(yn)}
FeCl3ڬF(xin)I(y)a(chn)Б(yng)ÏVijW(xu)оԌW(xu)(x)СMģMI(y)Ƃo(w)ˮFeCl3øa(chn)ƷFeCl3ҺжH2S
I(jng)Yϵ֪o(w)ˮFeCl3ڿ՚׳ӟA?c)O(sh)Ӌ(j)Ƃo(w)ˮ FeCl3Č(sh)(yn)bʾDӟἰAbȥE£
ٙz(yn)bõĚ
ͨCl2sMbеĿ՚⣻
þƾFм·ӟ(yng)
ܡ
wϵsֹͣͨCl2øH2sMCl2ռܷ
Ո(qng)شІ(wn)}
1bAз(yng)ĻW(xu)ʽ
2ڢ۲ӟɵğFeCl3M(jn)ռeڷ(yng)AҶҪʹeFeCl3M(jn)ռڢܲ
3EֹFeCl3ȡĴʩУE̖(ho)
4](mi)bCO(sh)Ӌ(j)(hu)(do)
5xӷʽʾ̓Ebúԇã
6bDеĸa(chn)ƷFeCl3ҺH2Sõ|(zh)
Ո(qng)(xi)(yng)xӷʽ
(yng)Y(ji)ռùwȫϡ}СMͬW(xu)(du)Һ(yng)xӵijɷN^c(din)ֻFe3+ֻFe2+
̽ҺĽM(sh)(yn)£
(sh)(yn)E | (sh)(yn)F(xin) | (sh)(yn)Y(ji)Փ(yng)xӷʽ |
ȡҺԇУKSCNҺ | | f(shu)O(sh)ڲO(sh)ٻ۳xӷʽ |
ȡҺԇУ KMnO4Һ | Һϼtɫȥ | f(shu) |
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ĿлW(xu) (li)Դ }ͣ(sh)(yn)}
ijͬW(xu)ڌ(sh)(yn)Fecˮⷴ(yng)Č(sh)(yn)bD҃ɷN
֪BзFcʯqĻCзŵǸEƾG鎧FzW(wng)ֵľ
(du)ȃbشІ(wn)}
1ΙzbõĚԣ
2bНɳӵǣ
3B̎l(f)(yng)ĻW(xu)ʽ
4Q(chng)ȡmgFcmʯqȻӟo(w)wųռĚwweQ(bio)(zhn)rVLF۵D(zhun)ʞ гӋ(j)ʽػ(jin)
5C(yng)Ĺwк+3r(ji)FeԓͬW(xu)ȡԇУһ}ʹwܽ^(gu)V?yn)VҺеμKSCNҺY(ji)^쵽Һɫ](mi)׃(jng)^(gu)˼ԓͬW(xu)J(rn)ˬF(xin)f(shu)(yng)Ĺwв+3r(ji)Feǣ _
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ĿлW(xu) (li)Դ }ͣ(sh)(yn)}
F}ڿ՚һ㶼ױĦ}[(NH4)2SO4FeSO46H2O]һāF}Ҫ(wn)ܟr(sh)ֽױ䌍(sh)(yn)ҵƂԭ:FeSO4+(NH4)2SO4+6H2O=(NH4)2SO4FeSO46H2O
DȡĦ}ĺ(jin)Ҫ̣
Ո(qng)شІ(wn)}:
1Eз(yng)(yng)MuλĿ
2EеIJǼӟl(f) ʲôܼӟ?
3Ħ}NH4+Fe2+SO42-ęz(yn):
ټͬW(xu)Ý(rn) ԇϡ} Һ(li)z(yn)@Nxӡ
ͬW(xu)z(yn)еFe2+KSCNҺ A(y)ڵĬF(xin)ͽY(ji)Փ
ی(sh)HͬW(xu)KSCNҺr(sh)l(f)F(xin)Һ׃ɜ\tɫ(du)ԼķˑɡͬW(xu)(jng)^(gu)м(x)˼J(rn)ͬW(xu)ķǿе@?yn)?u>
4ͬW(xu)y(c)Ħ}Fe2+ĺQ(chng)ȡ4. 0gĦ}Ʒˮmϡ0.20mol/LKMnO4ҺζKMnO4Һ10.00mL
ٱ(sh)(yn)ָʾ (ĸ)
A̪ | Bʯ | C | DҪ |
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ĿлW(xu) (li)Դ }ͣ(sh)(yn)}
֪Fe(NO3)2ܟֽa(chn)NO2O2Ո(qng)ɱ(ni)ݲشP(gun)(wn)}
1(du)wa(chn)Feσr(ji)IJ룺
һֻ@+2r(ji) ֻ@+3r(ji)
2Cͨ^(gu)±(yn)CxԇУ 0.01 mol/L KMnO4Һ0.1 mol/L H2SO4Һ3H2O2Һ0.1 mol/LKSCNҺsˮx
(sh)(yn) | F(xin) | ĿĻY(ji)Փ |
E1ȡmֽĹwԇ0.1 mol/L H2SO4Һʹܽ⣬όҺּӵAB֧ԇ | | ܽwa(chn) |
E2 | | ҺкFe3+ |
E3 | | Һв Fe2+ |
鿴𰸺ͽ>>
ʡ(lin)W(wng)`ͲϢe(bo)ƽ_(ti) | W(wng)кϢe(bo)(zhun)^(q) | p_e(bo)(zhun)^(q) | vʷ̓o(w)xкϢe(bo)(zhun)^(q) | ֙(qun)e(bo)(zhun)^(q)
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