??????? ?(Zn) -?(Cu) - PowerPoint PPT Presentation

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??????? ?(Zn) -?(Cu)

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... 3.( ) http://highscope.ch.ntu.edu.tw/wordpress/?p=20018 (Chemical Equilibrium) ... – PowerPoint PPT presentation

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Title: ??????? ?(Zn) -?(Cu)


1
?????????????????
  • ??
  • 49712033 ???
  • 49712038 ???
  • 49712041 ???

2
????
  • ????????(?)?????
  • ?????(?)????????
  • ??????????????

3
??
  • ?????????????
  • ??????
  • ??????????????
  • ?????????????
  • ??????????

4
  • ??????? ?(Zn) -?(Cu)

???????????,???????,??????????????,????????,?
?????????????????????,???????
5
?????
  • ??????????????,??????????????????,???????
  • ??????????
  • ?????

6
  • ???????e,???? r,???????? i,???????
    V(??????????)?

V e - ir
7
???????
  •  

8
  • ????
  • 1??
  • 2??????
  • 3?????

9
1.???????
  • ???????????????????
  • ?????,??????????????????????
  • ???????? Ag/AgCl

10
2.?????
  • Cd Cd²(a 1) Cu² (a1)Cu at 25?
  • ?
  • ????
  • Cd(s)? ?Cd² (a 1) 2e-
  • e0.4030 ??
  • ?
  • ????
  • Cu² (a 1) 2e- ? ? Cu (s)
  • e0.3370 ??
  • ???????emf
  • ecelleCd eCu 0.7400

11
??????????
  •  

EE - (0.025693/n) ln Q EE - (0.05916/n) log Q
12
?????????
13
  •  

14
????
  • ??????????,????????????????,????????????,????????,
    ???????(concentration cell)
  • ??????????????(?/?/???)
  • ERT/nF lna(C2)/a(C1) 0.0591log f2c2/f1C1

15
??????????
  • ??(Activity)???????????,???????????????
  • ????,??????????????????,??????????????????,???????
    ???? axX?x
  • ????????,??????,??????????????,??????
  • ?????????????????????

?? (mol/kg) 25 C 50 C 100 C 200 C 300 C 350 C
5 0.873 0.886 0.803 0.466 0.167 0.044
0.5 0.68 0.675 0.644 0.619 0.322 0.182
0.05 0.82 0.814 0.794 0.725 0.592 0.473
16
  •  

17
??????
  • ???1
  • Ag/AgCl????1
  • ??U????4
  • ???(?????)?1
  • ???1
  • ??(50ml)4
  • (250ml)2
  • ???1
  • ???1
  • ??1

(-) A?? ??1(c1) ??2 (c2) B?? ()
18
?????
?? ??? ????
KCl(1N) 74.55 g mol-1 ??2.24g?KCl ?????RO??,????30ml?(???)
ZnSO4(1N) 161.47 g mol-1 ??4.85g?ZnSO4 ?????RO??,????30ml?
CuSO4(1N) 159.62 g mol-1 ??4.79g?CuSO4 ?????RO??,????30ml?
AgNO3(1N) 169.87 g mol-1 ??5.10g?AgNO3 ?????RO??,????30ml?
AgNO3(0.1N) ??0.51g?AgNO3 ?????RO??,????30ml?
AgNO3(0.01N) ??0.05g?AgNO3 ?????RO??,????30ml?
NH4NO3(sat.) 80.052 g mol- ?30ml???????NH4NO3,???????,????????
AgCl(sat.) 143.32 g mol-1 AgCl?AgBr ?AgI ?????????,??30ml???????mg??,?????0.1g?
AgBr(sat.) 187.77 g mol-1 AgCl?AgBr ?AgI ?????????,??30ml???????mg??,?????0.1g?
AgI(sat.) 234.77 g mol-1 AgCl?AgBr ?AgI ?????????,??30ml???????mg??,?????0.1g?
??(gelatin) ?3 gelatin?(???)
??(agar) ?3 agar?(???)
19
1.????
  • ?????
  • ?1N KCl ???3???3??????,?????????????5mm?U????,??
    ?????,???????????????U??????????????????
  • ??????????????????

20
2. ???????
(1) ?? (2) ??
e- ?
Ag/AgCl????
1N KCl
  1. 1N ZnSO4 ??
  2. 1N CuSO4 ??

?? NH4NO3 ??
?????(1)?(2)?????????
21
3.??????????????
e- ?
??
??
1N KCl
1N ZnSO4 ??
1N CuSO4 ??
?????????????(Daniel)??????
22
4.???????
e- ?
??
??
1N KCl
  1. ??AgCl ??
  2. ??AgBr ??
  3. ??AgI ??

0.1N AgNO3 ??
?????(1)-(3)???????????,????????
Ag AgCl(sat.) KCl(1N) AgNO3 (0.1N) Ag
23
5.??????????
e- ?
??
??
?? NH4NO3
  1. 1N AgNO3 ??
  2. 1N AgNO3 ??
  3. 0.1N AgNO3 ??
  1. 0.1N AgNO3??
  2. 0.01N AgNO3??
  3. 0.01N AgNO3??

?????(1)-(3)???????????
Ag AgCl(dilu.) NH4NO3 (sat.) AgNO3 (conc.)
Ag
24
????
  • 1.?1N ZnSO4 ?1N CuSO4 ???????,????????????,???????
    ,????
  • ??????Ag/AgCl ???????
  • 2.??????????????,??????
  • ?????,??????????????????????????????

25
?????????
26
  •  

27
??1.????????
  • ?G ?H T?S
  • ??G ?U ? (PV) T?S (Sqrev/T ? ?wrev
    0,???????? ?V 0)?G T?S 0 ? (PV) T?S
    V?P
  • ???????a A b B c C d D?G ( c GC d GD
    ) ( a GA b GB ) (cGC0 cRT ln PC) (dGD0
    dRT ln PD) (aGA0 aRT ln PA) (bGB0 bRT
    ln PB)

 
28
??2.(Maximum non-expansion work)
29
??3.(??????)
30
????-??
  • http//highscope.ch.ntu.edu.tw/wordpress/?p20018
    ??????(Chemical Equilibrium)???????(Gibbs Free
    Energy)??????????????????/???????????????
  • Atkins - Physical Chemistry 8e
  • ???? http//wikipedia.tw/
  • ????? www.nsc.gov.tw/files/popsc/2003_138/05-?Q.pd
    f
  • ????? http//home.lsjh.tp.edu.tw/jjpong/podcast/el
    ec_chem.pdf

31
????-??
  • ???????? ????
  • ????????? ????
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