ijWdȤСM̽Fcķ,OӋˈD1D2ʾbMЌ
1fSO2wa(chn)ČF(xin)
2D2ЌeҪÞ
3bЈD2еNaOHҺSO2βֹȾ猢QKMnO4Һͬӿ_ĿԇKMnO4ҺcSO2ĻWʽ
4ȃbãyl(f)F(xin)D2bóܸõжwSO2ֹȾh(hun)߀һdz@ă(yu)cJ
5һΕrgֹͣsz^ιȡAԇеҺ뵽mˮԇԇxӵijɷNܣ
ֻFe3+ֻFe2+ Fe3+Fe2+
_JҺijɷxԇ
AϡHClҺ | Bϡ | CKSCNҺ | DKMnO4Һ |
E | F(xin)YՓ |
1ȡһ֧ԇμ1-2mLԇҺԇеμӎKSCNҺ | 1 tf 2 tfҺдFe3+t |
2 | |
1BƷtҺɫ 1֣
2ֹͣӟrֹܷƽ≺𰸾ɣ2֣
32KMnO4+5SO2+2H2O=K2SO4+2MnSO4+2H2SO42֣
4ڿƷİl(f)ֹͣ 2֣
5
E
F(xin)YՓ1ȡһ֧ԇܣμ1-2mLԇҺԇеμӎKSCNҺ 1]^쵽Һɫ@׃tf1֣
2^쵽ҺɫD(zhun)tɫtfҺдFe3+t1֣2 ȡһ֧ԇ1-2mLԇҺz^ιεμKMnO4Һ 1֣ μKMnO4ҺҺϼtɫɫtfҺкFe2+fμKMnO4ҺҺϼtɫtfҺЛ]Fe2+f5Fe2+ + MnO4- +8H+ = 5Fe3+ + Mn2+ +4H2O 2֣
ԇ}1ʹƷtҺɫfSO2wa(chn)ČF(xin)ǣBƷtҺɫ
2ֹͣӟrbF͝ԇЉpС@һֹܷƽ≺
32KMnO4+5SO2+2H2O=K2SO4+2MnSO4+2H2SO42֣
4_ʼFzһ|ֹͣrFzx@ӱڿƷİl(f)ֹͣ
5Fxc軯⛷ѪtɫҺôˁzrFxrFxӵęzǵ߀ԭԡFxӱiȻ軯⛁Mд_
cFxәzP֪R
ĿлW Դ }ͣ}
ijWСMbÌF仯|(zh)M̽شP}
1ԓСMͬWƵÚF^LrgDaʾbÌMв
ijͬWIJǣȊAoֹˮAKʹA_ʼB^쵽ĬF(xin)
ڞ_Ŀ_IJ
Bаl(f)xӷʽ
2bõČYȡA܃(ni)õҺ^՚СɺõFeSO4ٸߜџPbúͲȥ¼tɫwֽra(chn)ĚwDbʾbͨ^ϴbYԇܼ׃(ni)F(xin)ɫԇ҃(ni)ƷtҺtɫȥش
÷ʽʾԇܼa(chn)ɫԭ
ڞCtɫwɷM²
ۈDbбbõ
ܸ(j)F(xin)A܃(ni)Һɺڸߜџֽrl(f)ĻWʽ
鿴𰸺ͽ>>
ĿлW Դ }ͣ}
F(xin)NaHCO3Na2CO3xH2OĻ˜yxֵijͬWDʾbMЌ(CaCl2AʯҾ)
(1)Abõ:________________________________________________________________
(2)Bbõ:_______________________________________________________________
(3)Cbõ:_________________________________________________________________
(4)bAԇbNaHCO3Na2CO3xH2OĻ3.7 gþƾӟᵽȫ˕rB1.89gC0.22 gtxֵ______
(5)ԓb߀ǺʹyYƫСθM________ʲô___________________________________________________________________________________
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ĿлW Դ }ͣ}
ijоСMDb̽SO2Fe(NO3)3Һķ֪10 molL1Fe(NO3)3ҺpH1
Ոش
1bAзĻWʽ______________________________
2ų՚⌦ĸɔ_μӝ֮ǰMеIJ_______________________________
3bBЮa(chn)˰ɫɷ________
4BЮa(chn)ɫԭ
1SO2cFe3ԗlNO3
2SO2cFe3
3ԗlSO2cNO3
ٰ2bBзxӷʽ_________Cԓ_Mһ_J________
ڰ3ֻ茢bBеFe(NO3)3ҺQweҺͬlMЌxԇ________(ĸ)
a01 molL1ϡ
b15 molL1Fe(NO3)2Һ
c60 molL1 NaNO302 molL1}weϵҺ
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ĿлW Դ }ͣ}
FeCl3ڬF(xin)I(y)a(chn)БÏVijWоԌWСMģMI(y)ƂoˮFeCl3øa(chn)ƷFeCl3ҺжH2S
I(jng)Yϵ֪oˮFeCl3ڿ՚׳⣬ӟAOӋƂoˮ FeCl3ČbʾDӟἰAbȥE£
ٙzbõĚ
ͨCl2sMbеĿ՚⣻
þƾFм·ӟ
ܡ
wϵsֹͣͨCl2øH2sMCl2ռܷ
ՈشІ}
1bAзĻWʽ
2ڢ۲ӟɵğFeCl3MռeڷAҶҪʹeFeCl3Mռڢܲ
3EֹFeCl3ȡĴʩУE̖
4]bCOӋ
5xӷʽʾ̓Ebúԇã
6bDеĸa(chn)ƷFeCl3ҺH2Sõ|(zh)
Ոxӷʽ
Yռùwȫϡ}ᣬСMͬWҺxӵijɷN^cֻFe3+ֻFe2+
̽ҺĽM£
E | F(xin) | YՓxӷʽ |
ȡҺԇУKSCNҺ | | fOڲOٻ۳xӷʽ |
ȡҺԇ KMnO4Һ | Һϼtɫȥ | f |
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ĿлW Դ }ͣ}
ijͬWڌFecˮⷴČbD҃ɷN
֪BзFcʯqĻCзŵǸEƾG鎧FzW(wng)ֵľ
ȃbãشІ}
1ΙzbõĚԣ
2bНɳӵǣ
3B̎l(f)ĻWʽ
4QȡmgFcmʯqȻӟowųռĚwweQ˜ʠrVLF۵D(zhun)ʞ гӋʽػ
5CĹwк+3rFeԓͬWȡԇУһ}ʹwܽ^VVҺеμKSCNҺY^쵽Һɫ]׃(jng)^˼ԓͬWJˬF(xin)fĹwв+3rFeǣ _
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ĿлW Դ }ͣ}
F}ڿ՚һ㶼ױĦ}[(NH4)2SO4FeSO46H2O]һāF}Ҫ(wn)ܟrֽױ䌍ҵƂԭ:FeSO4+(NH4)2SO4+6H2O=(NH4)2SO4FeSO46H2O
DȡĦ}ĺҪ̣
ՈشІ}:
1EзMuλĿ
2EеIJǼӟl(f) ʲôܼӟ?
3Ħ}NH4+Fe2+SO42-ęz:
ټͬWÝ ԇϡ} Һz@Nx
ͬWzеFe2+KSCNҺ AڵĬF(xin)ͽYՓ
یHͬWKSCNҺrl(f)F(xin)Һ׃ɜ\tɫԼķˑͬW(jng)^м˼JͬWķǿеģ@
4ͬWyĦ}Fe2+ĺQȡ4. 0gĦ}Ʒˮmϡᣬ0.20mol/LKMnO4ҺζKMnO4Һ10.00mL
ٱָʾ (ĸ)
A̪ | Bʯ | C | DҪ |
鿴𰸺ͽ>>
ĿлW Դ }ͣ}
֪Fe(NO3)2ܟֽa(chn)NO2O2Ոɱ(ni)ݲشP}
1wa(chn)FeσrIJ룺
һֻ@+2r ֻ@+3r
2Cͨ^±CxԇУ 0.01 mol/L KMnO4Һ0.1 mol/L H2SO4Һ3H2O2Һ0.1 mol/LKSCNҺsˮx
F(xin) | ĿĻYՓ | |
E1ȡmֽĹwԇ0.1 mol/L H2SO4ҺʹܽόҺּӵAB֧ԇ | | ܽwa(chn) |
E2 | | ҺкFe3+ |
E3 | | Һв Fe2+ |
鿴𰸺ͽ>>
ʡ(lin)W(wng)`ͲϢeƽ_ | W(wng)кϢe^(q) | p_e^(q) | vʷ̓oxкϢe^(q) | ֙e^(q)
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