Home > Iowa Academy of Science > Journals & Newsletters > Proceedings of the Iowa Academy of Science > Volume 55 (1948) > Annual Issue
Document Type
Research
Abstract
It was found that students have difficulty in observing end points when titrating with methyl red and methyl orange as indicators, because of the comparatively large volume of solution necessary to cause a definite color change. Methyl orange-xylene cyanole was purchased from Eastman Kodak Company to overcome this difficulty. However, it was found that the color change of this mixed indicator was not completely satisfactory. A study has been made to obtain an indicator which presented the best possible color characteristics combined with the lowest pH interval for the titration of strong acids and bases. Four indicators were studied. They were methyl red, methyl red-xylene cyanole, methyl red plus methyl orange-xylene cyanole, and methyl orange-xylene cyanole.
Publication Date
1948
Journal Title
Proceedings of the Iowa Academy of Science
Volume
55
Issue
1
First Page
233
Last Page
237
Copyright
©1948 Iowa Academy of Science, Inc.
Language
en
File Format
application/pdf
Recommended Citation
Brown, George W. and Smith, Lothrop
(1948)
"Color Characteristics of Certain Acid-Base Indicators,"
Proceedings of the Iowa Academy of Science, 55(1), 233-237.
Available at:
https://scholarworks.uni.edu/pias/vol55/iss1/30