ON THE COMPLEXING ABILITY OF ERIOCHROME BLACK T AS A METALLOCHROMIC INDICATOR FOR SOME ALKALI AND ALKALINE EARTH CATIONS IN ACETONE AND DIMETHYLSULPHOXIDE SOLUTIONS
The interaction between eriochrome black T and Li , Na , K ,Mg and Ca ions in acetone and dimethylsulphoxide solutions has been investigated spectrophotometrically. The formation constants of the resulting 1 : 1 complexes were determined and found to decrease in the order Mg >Ca >Li >K &...
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| Format: | Article |
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| Language: | English |
| Published: |
University of Tehran
1991-12-01
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| Series: | Journal of Sciences, Islamic Republic of Iran |
| Online Access: | https://jsciences.ut.ac.ir/article_31442_58278833beb3656c065a149de98e041c.pdf |
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| Summary: | The interaction between eriochrome black T and Li , Na , K ,Mg and Ca
ions in acetone and dimethylsulphoxide solutions has been investigated
spectrophotometrically. The formation constants of the resulting 1 : 1 complexes were
determined and found to decrease in the order Mg >Ca >Li >K >Na in both
solvents used. There is an inverse relationship between the stabilities of the
complexes and the solvating ability of the solvents |
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| ISSN: | 1016-1104 2345-6914 |