7.1 SEM Ogniw |
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Grzegorz Cygan Ch.P. IIIr |
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m |
0,8 |
g |
7,68E-02 |
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C CuSO4 = |
0,2 M |
log g |
-1,114 |
a1 |
1,54E-02 |
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1. Pomiar SEM ogniwa stężeniowego, a1= |
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Schemat ogniwa |
(-) Cu I CuSO4(a2) II CuSO4(a1) I Cu (+) |
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C2 |
SEM [mV] |
SEM [mV] |
SEMśr [mV] |
a2 |
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0,2 |
0,070 |
0,100 |
0,085 |
1,537E-02 |
0,00000 |
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0,02 |
17,610 |
17,650 |
17,630 |
1,537E-03 |
0,02956 |
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0,002 |
22,870 |
22,800 |
22,835 |
1,537E-04 |
0,05913 |
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0,0002 |
42,100 |
41,900 |
42,000 |
1,537E-05 |
0,08869 |
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2E-05 |
57,500 |
57,700 |
57,600 |
1,537E-06 |
0,11825 |
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2E-06 |
70,000 |
69,800 |
69,900 |
1,537E-07 |
0,14782 |
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2. Pomiar potencjału elektrod I-go rodzaju |
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Schemat ogniwa |
SEM [V] |
SEM [V] |
SEMśr [V] |
Ew/g el.wod. [V] |
(-) Hg, Hg2Cl2 I KCl(nas) II CuSO4(0,2) I Cu (+) |
0,0440 |
0,0441 |
0,04405 |
0,28605 |
(-) Hg, Hg2Cl2 I KCl(nas) II ZnSO4(0,1) I Zn (+) |
-0,997 |
-1,004 |
-1,0005 |
-0,75850 |
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3. Pomiar pH buforu za pomocą elektrody chinhudronowej |
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Schemat ogniwa |
SEM [V] |
SEM [V] |
SEMśr [V] |
pH |
(-) Hg, Hg2Cl2 I KCl(nas) II buf. X, Q, QH2 I Pt (+) |
0,1435 |
0,1449 |
0,1442 |
4,092 |
(-) Hg, Hg2Cl2 I KCl(nas) II buf. , Q, QH2 I Pt (+) |
0,1315 |
0,1313 |
0,1314 |
4,590 |
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4. Wyznaczanie iloczynu rozpuszczalności |
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Schemat ogniwa |
SEMśr [V] |
CAg+ [mol/dm3] |
CX- [mol/dm3] |
L |
(-) Ag I AgX(nas) a1=x II AgNO3 a2=0,01M I Ag(+) |
0,4895 |
5,280E-11 |
9,091E-04 |
4,800E-14 |