What are cell diagrams - galvanic cell, Chemistry

Assignment Help:

What are Cell diagrams?

Consider the galvanic cell depicted in Figure. This cell has a hydrogen electrode at the left and a silver-silver chloride electrode at the right. The hydrogen electrode is a strip of platinum in contact with hydrogen gas and with aqueous hydrochloric acid, which is the ionic conductor. In the type of hydrogen electrode shown in the figure, hydrogen gas is introduced through a side tube into a closed-end glass jacket that surrounds the platinum strip and is immersed in the hydrochloric acid; the gas bubbles out through holes near the bottom of the tube. The silver-silver chloride electrode is a silver strip or wire that dips into the hydrochloric acid and is coated with solid silver chloride.

943_Define the Elements of a galvanic cell.png

The cell in Figure is compactly described by the following cell diagram:

Cu |Pt | H2 (g) | H+ (aq), Cl-(aq) | AgCl(s) | Ag | Cu

A cell diagram indicates which electrode is at the left and which is at the right, and shows the reactants and products of the two electrode reactions. A single vertical bar represents a phase boundary. Commas are used to separate different species in the same phase.

The same cell can be described by a slightly different cell diagram that omits the copper terminals seen in the figure and shows the electrolyte solute instead of the ion species:

Pt | H2 (g) | HCl (aq) | AgCl (s) | Ag

The reason it is not necessary to include the terminals is that the property whose value we seek, the zero-current cell potential, is the same regardless of the metal used for the terminals.


Related Discussions:- What are cell diagrams - galvanic cell

Characteristics of homologous series, Characteristics of homologous series ...

Characteristics of homologous series (i) All the members of a series can be presented by the general formula. For instance, the members of the alcohol family are illustrated b

Electrochemistry, Electrocatalysis is a branch of electrochemistry dealing ...

Electrocatalysis is a branch of electrochemistry dealing with anodically and cathodically induced radical reaction mechanisms utilizing the electrochemical reactivity of an organom

Dyes - chemistry in action, Dyes Dye is a synthetic and natural colouri...

Dyes Dye is a synthetic and natural colouring matter that is employed in solution to stain materials particularly fabrics. All the coloured substances are not dyes. A coloured

Transitions metal, write a note on the oxide of 3d transition metal

write a note on the oxide of 3d transition metal

Acidity of phenol, What is effect of substituent on acidity of phenol

What is effect of substituent on acidity of phenol

Inorganic salt analysis, analysis of group III basic radicals Ti 4+, Th4+, ...

analysis of group III basic radicals Ti 4+, Th4+, Zr4+, V5+, Ce4+ and UO2 2+

Period tabel, why are lanthanides and actinides called innertransition meta...

why are lanthanides and actinides called innertransition metals

Cis-2-butene is a symmetrical alkene, cis-2-butene is a symmetrical alkene ...

cis-2-butene is a symmetrical alkene Because cis-2-butene is a symmetrical alkene, it reacts to give the similar product in either oxymercuration- reduction or hydroboration-ox

Criteria of purity of organic compounds, Criteria of purity of organic comp...

Criteria of purity of organic compounds The purity of an organic compound can be determined by ascertaining its some physical constants such as m.p., b.p., defined gravity, re

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd