Transcription of Galvanic Cell Notation Example - University of Missouri ...
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Galvanic Cell Notation Example - University of Missouri ...
Galvanic Cell Notation Inactive (inert) electrodes not involved in the electrode half-reaction (inert solid conductors;. Half-cell Notation serve as a contact between the Different phases are separated by vertical lines solution and the external el. circuit). Species in the same phase are separated by Example : Pt electrode in Fe3+/Fe2+ soln. commas Fe3+ + e- Fe2+ (as reduction). 3+ 2+. Notation : Fe , Fe Pt(s). Types of electrodes Active electrodes involved in the electrode Electrodes involving metals and their half-reaction (most metal electrodes) slightly soluble salts Example : Zn2+/Zn metal electrode Example : Ag/AgCl electrode Zn(s) Zn2+ + 2e- (as oxidation) AgCl(s) + e- Ag(s) + Cl- (as reduction). Notation : Zn(s) Zn2+ Notation : Cl- AgCl(s) Ag(s). Electrodes involving gases a gas is bubbled Example : A combination of the Zn(s) Zn2+ and over an inert electrode Fe3+, Fe2+ Pt(s) half- cells leads to: Example : H2 gas over Pt electrode H2(g) 2H+ + 2e- (as oxidation).
1 Galvanic Cell Notation • Half-cell notation – Different phases are separated by vertical lines – Species in the same phase are separated by commas • Types of electrodes ¾Active electrodes – involved in the electrode half-reaction (most metal electrodes)
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