7.2 Termodynamika Ogniw | |||||
Grzegorz Cygan Ch.P. IIIr | |||||
Ogniwo I | (Clarka) | ||||
Nr | t [oC] | T [K] | E [V] | E [V] | Eśr [V] |
0 | 22,2 | 295,35 | 1,455 | 1,456 | 1,4555 |
1 | 26 | 299,15 | 1,452 | 1,452 | 1,4520 |
2 | 30 | 303,15 | 1,449 | 1,450 | 1,4495 |
3 | 34 | 307,15 | 1,447 | 1,447 | 1,4470 |
4 | 38 | 311,15 | 1,445 | 1,444 | 1,4445 |
5 | 42 | 315,15 | 1,442 | 1,442 | 1,4420 |
6 | 46 | 319,15 | 1,440 | 1,439 | 1,4395 |
Ogniwo II | (amalgamatowe) | ||||
Nr | t [oC] | T [K] | E [mV] | E [mV] | Eśr [mV] |
0 | 22,2 | 295,35 | 5,48 | 5,83 | 5,655 |
1 | 26 | 299,15 | 7,12 | 7,11 | 7,115 |
2 | 30 | 303,15 | 8,32 | 8,31 | 8,315 |
3 | 34 | 307,15 | 9,61 | 9,59 | 9,600 |
4 | 38 | 311,15 | 10,50 | 10,51 | 10,505 |
5 | 42 | 315,15 | 11,61 | 11,60 | 11,605 |
6 | 46 | 319,15 | 12,54 | 12,53 | 12,535 |
7 | 50 | 323,15 | 13,60 | 13,62 | 13,610 |
Ogniwo I | E = a + b*T | ||||
a = | 1,6483518 | b = | -0,000655 | E298K = | 1,4532 |
Ogniwo II | E = a + b*T | ||||
a = | -76,551 | b = | 0,2795 | E298K = | 6,740 |
Wartości standardowych funkcji termodynamicznych reakcji w mierzonych ogniwach | |||||
DG298K [kJ/mol] | DH298K [kJ/mol] | DS298K [J/mol*K] | |||
Ogniwo I | -280,3391 | -242,6837 | 126,3604 | ||
Ogniwo II | -1,3003 | -17,3685 | -53,9202 |