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

Estimation of synthetic food colours in foods, Q. Estimation of synthetic f...

Q. Estimation of synthetic food colours in foods? Food colours in various products need to be isolated, identified and then quantitatively measured for their limits. Estimatio

Elements, diagonal relationships

diagonal relationships

Properties of ethyl alcohol, Properties of ethyl alcohol Physical prope...

Properties of ethyl alcohol Physical properties It is a colorless liquid with a characteristic alcoholic smell. Its boiling point is 351K It is neutral towards litmus

Pariodik table.., writethe sort farmula of learn the pariodik table.

writethe sort farmula of learn the pariodik table.

Phenol, what is trihydric phenol and hownit is works

what is trihydric phenol and hownit is works

THERMODYNAMICS, LIMITATION OF THIRD LAW OF THERMODYNAMICS

LIMITATION OF THIRD LAW OF THERMODYNAMICS

Canizzaro rex., Why 2-methyl propanal gives canizzaro Rex.

Why 2-methyl propanal gives canizzaro Rex.

Explain transition elements and their compounds, Explain the following obse...

Explain the following observations: (i)  Generally there is an increase in density of elements from titanium (Z = 22) to copper (z =29) in the first series of transition element

Vat dyes - classification of dyes, Vat dyes: These dyes are insoluble i...

Vat dyes: These dyes are insoluble in water and cannot be helpful directly. These dyes on decline along with sodium hydrosulphite (NaHSO 3 ) in a vat make a soluble compound th

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