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The Determination of the Dissociation Constants of α-Naphthol and β-Naphthol in Ethanol/Water Mixed Solvent by Potentiometric Titration(PDF)

南京师范大学学报（工程技术版）[ISSN:1006-6977/CN:61-1281/TN]

Issue:
2003年04期
Page:
18-20
Research Field:
Publishing date:

Info

Title:
The Determination of the Dissociation Constants of α-Naphthol and β-Naphthol in Ethanol/Water Mixed Solvent by Potentiometric Titration
Author(s):
Xie Yun;  Wang YuPing;  Peng Panying
College of chemistry and environmental science,Nanjing Normal University, 210097, Nanjing, PRC
Keywords:
phenol;  A- naphthol;  B- naphthol;  mixed solvent;  dissociation constants;  potentiometric titration
PACS:
O657.1
DOI:
-
Abstract:
The dissociation constants of phenol, A-naphthol and B- naphthol in water- ethanol mixed solvent ( I= 0.10 mol/ L, KCl) were determinded by potentiometric titration. The results showed that the pK a was a good linear function of the volume fraction of ethanol in the concentration range studied. The dissociation constants of phenol, A- naphthol and B- naphthol in water were determinded by extrapolation to be 9. 80, 9.40 and 9.67 under the conditions of this experiment.

References:

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Last Update: 2013-04-29