W. Hagan, D. L. Edie, L. Cooley
Jul 1, 2007
Citations
1
Influential Citations
8
Citations
Journal
Journal of Chemical Education
Abstract
An experiment is described that employs the 1H-NMR signal of aqueous imidazole to determine the pH of an unknown solution. The procedure involves the preparation of a calibration curve, which is then used for the analysis of the unknown(s). The advantages of imidazole as a pH probe for near-neutral solutions are briefly discussed. The exercise is primarily intended for general chemistry students, but could also be employed in a course on instrumental analysis.