TCE ForumWhats NewSearchOrders


The Chemical Educator

ISSN: 1430-4171 (electronic version)

Table of Contents

Abstract Volume 9 Issue 5 (2004) pp 285-287

Introducing the Concept of Internal Standard in Analytical Chemistry with a Conductimetric Titration

P. Asoka B. Marasinghe

Department of Chemistry, Minnesota State University Moorhead, Moorhead MN 56563, asoka@mnstate.edu
Received March 2, 2004. Accepted July 14, 2004.

Published online: 1 October 2004

Abstract. A conductimetric acid–base titration that utilizes the concept of internal standard addition for the quantification of protic acid species is described. The standard addition of SO4–2 is employed for determination of HSO4 ions in aqueous solution. The method does not require accurate knowledge of the titrant, Ba(OH)2, and it can be extended for the quantitative analysis of species such as HSO3, HCO3, HPO4–2.

Key Words: Laboratories and Demonstrations; analytical chemistry; biochemistry; titration

(*) Corresponding author. (E-mail: asoka@mnstate.edu)

Article in PDF format (181 KB) HTML format

Supporting Materials:

 


Issue date: October 1, 2004

© The Chemical Educator 1996-2017