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Instrumentation - Electrochemistry
Instrumentation - Electrochemistry
9
Medical
Undergraduate 2
05/20/2012

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Term
Potentiometry Definition
Definition

potential is measured under conditions of no current flow

 

measured as deffierence between cathode electrical potential and anode electrical potential

 

equation: Ecell = Ecathode - Eanode

Term
Amperometry Definition
Definition
chemical analysis by techniques which involve measuring electrical currents
Term
Coulometry Definition
Definition
determines quantity of substance based on strict proportionality between extend of chemical change and quantity of electricity involved
Term
Faraday's Law: 1st Law of Electrolysis
Definition
mass of substance altered at an electrode during electrolysis is directly proportional to the quantity of electricity transferred to that electrode
Term

Faraday's Law: 2nd Law of Electrolysis

Definition
for a given quantity of electricity, the mass of an elemental material altered at an electrode is directly proportional to the elements equivalent weight
Term
Faraday's Law Reaction
Definition

m = (Q/F)(M/z)

 

m: mass of substance

Q: total electric charge

F: constant (given)

M: molar mass

z: valency number of ions

Term
Polanography Definition
Definition
technique for identifying and estimating the concentration of reducible elements in an electrochemical cell by means of the dual measurement of the curent flowing through the cell and the electrical potential at which each element is reduced
Term
Galvanic Cells
Definition

consists of two half cells and a salt bridge

 

 

Term
Leo the Lion Goes Ger
Definition

leaving electrons oxidizes

 

gaining electrions reduces

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