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-An apparatus in which electrical energy is made from chemical energy

-To keep the net ionic charge in both compartments of a galvanic cell zero, a salt bridge or a porous disk is used

oSalt bridges and porous disks both allows for ions to flow without too much mixing of the two solutions

-In a galvanic cell, oxidation (loss of electrons) occurs in the anode and reduction (gain of electrons) occurs in the cathode

  1. -The energy behind one compartment pulling electrons from the other compartment is called cell potential, which is measured in the unit of volt, 1 joule of work per coulomb of charge transferred

A FUN GALVANIC CELL ANIMATION WHERE THE ELECTRONS ARE TRANSFERRING FROM THE ANODE TO THE CATHODE.

Line Notation

-Basics

oAnode components listed on left, cathode components listed on right

oDouble vertical lines separate the two, indicating a salt bridge or porous disk

oPhase difference is noted by a single vertical line

oElements constituting anode and cathode are at far lefts and rights

-Four descriptions needed

oCell potential

oDirection of electron flow

oCathode and anode

oNature of electrode and ions present in each compartment

♣If no conducting solid, then inert conductor required

       CLICK HERE FOR PRACTICE PROBLEMS

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