@article{wjce2016461,
author={{Devi, G. Mallika and Padmavathi, D. A. and Sanjeev, R. and Jagannadham, V.},
title={Filter Paper Salt Bridge in Potentiometric Titrations: An Undergraduate Laboratory Chemical Education Article},
journal={World Journal of Chemical Education},
volume={4},
number={6},
pages={117--123},
year={2016},
url={http://pubs.sciepub.com/wjce/4/6/1},
issn={2375-1657},
abstract={It is essential in an electrochemistry laboratory to use salt bridge in electrochemical cells while measuring the emf. This provides a means of eliminating ¡°liquid junction potential¡± between two half cells. It was indicated laconically without any experimental details (https://en.wikipedia.org/wiki/Salt_bridge#cite_ref-1) that the salt bridges can also be made using laboratory filter paper soaking in a suitable inert salt solution. In this article we have made a detailed potentiometric experimental study on four representative titrations viz. strong acid (HCl) versus strong base (NaOH), weak acid (CH<SUB>3</SUB>COOH) versus strong base (NaOH), ferrous iron (Fe<SUP>2+</SUP>) versus dichromate (Cr<SUB>2</SUB>O<SUB>7</SUB><SUP>2-</SUP>), and chloride ion (Cl<SUP>-</SUP>) versus silver ion (Ag<SUP>+</SUP>) using filter paper salt bridge and compared the results with those obtained using Agar-Agar salt bridge.},
doi={10.12691/wjce-4-6-1}
publisher={Science and Education Publishing}
}