About this document
Colorimetric pH Determination Method by Judy Ann Cocadiz is a document available to read on EtoBox.
This document describes an experiment to determine pH colorimetrically and calculate the ionization constant of a weak acid. Part A involves preparing a set of McIlvaine buffers ranging from pH 2.2 to 8. Part B uses five indicators and acid solutions to determine pH colorimetrically. The results show good agreement between observed and calculated pH values. The discussion explains that adding a common ion like sodium acetate decreases the acidity of acetic acid solutions due to a backward reaction suppressi
- Author
- Judy Ann Cocadiz
- Language
- EN