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

Hardness of water, 1.why hardness Bore water less than sea water?

1.why hardness Bore water less than sea water?

Mixture analysis, #questiowhy HNO3 is not used for detection of acidic radi...

#questiowhy HNO3 is not used for detection of acidic radical of 1st and 2nd group ions?n..

Bondletgth of nitroalkanes, In nitromethane N-O bondlength is 1.21A° while...

In nitromethane N-O bondlength is 1.21A° while normal N-O bondlength is 1.36 A° and for N=O it is 1.18A°..Explain why

Types of titrations - volumetric analysis, Types of titrations - Volumetric...

Types of titrations - Volumetric analysis Titrations can be categorized as : (A) Acid base titrations or alkalimetry and acidimetry (B) Redox titrations or Oxidation redu

The outlet temperature, You are interested in modelling a 10 m  surge tank ...

You are interested in modelling a 10 m  surge tank which holds the products exiting a plug flow reactor, as shown below. One of the purposes of the tank is to heat the reactor prod

Basic organic chemistry, can you locate ortho,meta para positions on a benz...

can you locate ortho,meta para positions on a benzene ring

Find series of hydrogen atom spectrum electronic transition, In Balmer seri...

In Balmer series of hydrogen atom spectrum which electronic transition causes third line: (1) Fifth Bohr orbit to second one (2) Fifth Bohr orbit to first one (3) Fourth

Physical properties of aromatic nitro compounds, Physical properties of Aro...

Physical properties of Aromatic Nitro Compounds (a) Aromatic nitro compounds are insoluble in water although soluble in organic solvents. (b) They are either pale yellow liq

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