Skip to content
Research Article Open access CC BY 4.0

Correlation between EMF and Gibbs Free Energy, and the Relative Concentration of Electrolytes in a Concentration Cell

Sumeir Walia

International Research Journal of Pure and Applied Chemistry · pp. 111–121 · Published 23 Sep 2023

10.9734/irjpac/2023/v24i5831

Abstract

The experiment aimed at establishing a link between the varying concentration of the electrolyte in one half-cell of a concentration cell and the resulting EMF generated across the cell. Further, it also drew a connection between this variation and the change in Gibbs free energy for the electrochemical reaction. The change in Gibbs free energy calculated for the electrochemical reaction for each C2 value indicated a decreasing trend with an increasing C2 concentration. It was thus observed that as C2 increased, or the difference in concentrations of the two electrolytes decreased, the spontaneity of the reaction decreased. Reduction occurs at the negatively charged cathode and oxidation occurs at the positively charged anode. Here, aqueous NaCl is undergoing electrolysis – where the Cl-1 ions are attracted to the positive anode and get oxidized due to the loss of electrons and emerge as chlorine Cl2 gas.

Electrolysis voltaic cell oxidation electromotive force

Cited by 0

No indexed citations yet.

Article metrics

Real usage data collected on this platform.

0

Page views

0

PDF downloads

0

Outbound clicks

0

Citations

Views by country

Approximate, from request IP at view time — not citizenship or institution. Countries with fewer than 5 views are grouped as "Other".

No views recorded yet.

Traffic sources

Referring site, by host.

No traffic recorded yet.

Views and downloads exclude known bots/crawlers. Citations combines this platform's own DOI-resolved index with each external source's own reported total — see Cited by above for individually listed citing works. Last refreshed 0 seconds ago.