# last mine - 1-INTRODUCTIONI-Objective-To obtain the...

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Unformatted text preview: 1-INTRODUCTIONI-Objective:--To obtain the transport number of H+and Cl-ions.-To obtain the mobilities of the H+and Cl-ions and compare it with the theoretical values.II-Theory:-The transference number Tiof ion i in a solution is defined as the fraction of the electric current carried by that ion. The moving boundary method is one of measuring Ti.(29(29Current =ChargeTime=Charge Per IonNumber Of IonsTime×and,N u m b e r O f Io n sT im eC o n c e n tr a tio n A r e a L e n g thT im e=× ×The current carried by ion Iis :-IiF zicil At=If the total current is I, then by the definition of transference number :-TiIiIF zicilAIt==and,(29(29TiIIIuuu=+++-=+++-The ionic conductivity λiof an ion is given by:-λiuiF=------------ (a)and the equivalent conductivity for an ionic solution is the sum of the ionic conductivities :-Λ =++-λλ------------ (b)Substituting equation (a) into (b) one gets:-(29Λ =++-F uuor,(29uuF+-+=ΛThe electrode reactions are:Anode:Cd sCdaqe()()→++-22Cathode:AgCl seAg sClaq()()()+→+--Net:Cd s...
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last mine - 1-INTRODUCTIONI-Objective-To obtain the...

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