Lab-5 transfer of ion - K I N G F A H D U N I V E RS I T Y...

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KI N G F A H D U N I V ERS I T Y O F PET RO LEU M & M I N ERA LS CH EM I S T RY D EPA RT M EN T EXPERIMENTS IN PHYSICAL CHEMISTRY CHEM-311 P re p a re d F o r Dr. M. I. Wazeer E X P # 5 T ra n s fe re n c e o f io n s /m o vin g b o u n d a ry m e th o d D O N E BY : A l- Gha mdi, Ka ma l S . I D # : 9 0 1 4 3 2 S E C .# : 5 6 D ate O f P er for m ance: 03-4-1996 D ate O f Subm ission: 10-4-1996
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INTRODUCTION I-Objective:- -To obtain the transport number of H + and Cl - ions. -To obtain the mobilities of the H + and Cl - ions. II-Theory:- The transference number T i of 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 T i . ( 29 ( 29 Current = Charge Time = Charge Per Ion Number Of Ions Time × Number Of Ions Time Concentration Area Length Time = × × The current carried by ion I is :- I i F z i c i lA t = If the total current is I , then by the definition of transference number :- T i I i I F z i c i lA It = = and, ( 29 ( 29 T i I I I u u u = + + + - = + + + - The ionic conductivity λ i
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