# MN - KING FAHD UNIVERSITY OF PETROLEUM & MINERALS CHEMISTRY...

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KING FAHD UNIVERSITY OF PETROLEUM & MINERALS CHEMISTRY DEPARTMENT EXPERIMENTS IN PHYSICAL CHEMISTRY CHEM-311 Prepared For Dr. FORNAR EXP # 3 Transference of ions/moving boundary method DONE BY: Al-Ghamdi, MAJED I. ID#: 974807 AND ID#:970428 ID#:985309 SEC.#: 52 Date Of Performance: 03-3-2002 Date Of Submission: 10-3-2002

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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 × and, 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 of an ion is given by:-
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## This note was uploaded on 11/07/2010 for the course CHEMICAL E 300 taught by Professor Ahmedghazal during the Spring '10 term at King Fahd University of Petroleum & Minerals.

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MN - KING FAHD UNIVERSITY OF PETROLEUM & MINERALS CHEMISTRY...

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