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

Explain chemistry changes of food deterioration, Chemical Changes Duri...

Chemical Changes During the processing and storage of foods, several chemical changes occur that involve the internal food components and the external environmental factors. T

The hydration of propene, The hydration of propene The hydration of pro...

The hydration of propene The hydration of propene includes the usual mechanistic steps of alkene protonation to form a carbocation followed by the nucleophilic reaction of wate

Mass Number, What is meant by ''mass number''

What is meant by ''mass number''

Qualitative analysis, principle of qualitative analysis of funcional group

principle of qualitative analysis of funcional group

Uses of cellulose - biomolecules, Uses of Cellulose - biomolecules (i) ...

Uses of Cellulose - biomolecules (i) Cellulose is used as such in the manufacture of cloth (cotton), canvas and gunny bags (jute) and paper (wood, bamboo, straw, etc.) (ii)

Electronic configuration of deuterium atom, Electronic configuration of deu...

Electronic configuration of deuterium atom is: (1) 1s 1                    (2) 2s 2                  (3) 2s 1                      (4) 1s 2 Ans: 1s 1

Solution, a student prepared a solution of sodium carbonate by 2.111g of th...

a student prepared a solution of sodium carbonate by 2.111g of the solid to a 250.0ml volumentric flask and adding H2O to the mark.Some of this solution was transferred to a burett

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