Page 229 - Srednje skole - radovi

PROMENA ELEKTROMOTORNE SILE U ZAVISNOSTI OD KONCENTRACIJE
ELEKTROLITA

CHANGES ELECTROMOTIVE FORCE IN RELATION TO CONCENTRATION OF

ELECTROLYTES

DRAGANA MILADINOVID Učenica III razreda Šeste Beogradske gimnazije

Mentor: DR IVANA STOJKOVID

REZIME

Značajan doprinos razvoju elkrohemije ima sve veda primena uređaja koji pretvaraju hemijsku energiju u
elektricnu. Procesi koji se pri tome odvijaju , zasnivaju se na promeni elkromotorne sile. U ovom radu su

ispitivani faktori koji utiču na te promene i eksperimentalnim putem je potvrđeno da postoji uzajamna

zavisnost elktromotorne sile od temperature i koncentracije rastvora . Ogled je izveden uz pomod
danijelove delije i vodenih rastvora ZnSO 4, CuSO 4 . To saznanje omogudava efikasniju primenu tih
uređaja.

Кljučne reči: Galvanski element, Danijelova delija, elektromotorna sila, rastvori, koncentracija, Nerstova

jednačina

SUMMARY

A significant contribution to the development elkrohemije has an increasing application of devices that

convert chemical energy into electricity. Processes that are at the same place, based on the change
elkromotorne force. This paper examined factors that influence these changes and experimentally

confirmed that there is mutual dependence elktromotorne forces of temperature and concentration.
The experiment was conducted with the help of Daniel cell and aqueous solutions of ZnSO 4 , CuSO 4 . That

knowledge allows more efficient use of the devices.

Key words: Galvanic element, Daniel’s cell, eletromotive force, solutions, concentration, Nernst equation

32