Elektrohemija

Submitted by milicaradenkovic on Thu, 07/02/2015 - 19:05

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Da li neko zna da izracuna koliki je elektrodni potencijal reakcije

4Fe³⁺ + O2 + 4H⁺ --------------->4Fe²⁺ + 2H2O

buduci_student - Thu, 07/02/2015 - 19:19

Fe2+(aq) Fe3+(aq) + e-…………….E° = -0.77 V

O2(g) + 4H+(aq) + 4e- 2H2O E° = +1.23 V

--------------------------------------------------------

4Fe2+(aq) + O2(g) + 4H+(aq) 4Fe3+(aq) + 2H2O
E° = -0.77 + 1.23 = +0.46

E°>o

buduci_student - Thu, 07/02/2015 - 19:21

Fe2+(aq)-----> Fe3+(aq) + e-…………….E° = -0.77 V

O2(g) + 4H+(aq) + 4e- ---->2H2O E° = +1.23 V

--------------------------------------------------------

4Fe2+(aq) + O2(g) + 4H+(aq) 4Fe3+(aq) + 2H2O
E° = -0.77 + 1.23 = +0.46

E°>o

milicaradenkovic - Thu, 07/02/2015 - 19:27

Jeste ja sam pogresila u jednacini. Hvala na odgovoru.

buduci_student - Thu, 07/02/2015 - 20:12

:D Nista

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