Document Details

Document Type : Article In Journal 
Document Title :
Study of the Dissociation Constants of Some Weak Indicator Bases in Ethyl Cellosolve - Water Solvent Mixtures
دراسة ثوابت التفكك لبعض الكواشف القاعدية الضعيفة في مخاليط الإيثل سيليوسولف - الماء المذيبة
 
Subject : Chemistry 
Document Language : English 
Abstract : A spectrophotometric method has been used for the determination of the dissociation constants of some weak indicator bases in various ethyl cellosolve (ECS)-water solvent mixtures at 25?C. The indicators used are p-nitro, o-nitro and m-nitroaniline. The dissociation constants are found to decrease with increase of ECS for all investigated indicators which indicates that the basicity of the medium is increased by the addition of solvent. The acidity function, H?, of HCl in water-ECS mixtures is also determined and is found to increase with concentration increase of organic solvent for a fixed acid concentration. This is explained owing to the salting-in effect which depends on the used solvent type. 
ISSN : 1012-1319 
Journal Name : Science Journal 
Volume : 20 
Issue Number : 1 
Publishing Year : 1429 AH
2008 AD 
Number Of Pages : 11 
Article Type : Article 
Added Date : Sunday, October 11, 2009 

Researchers

Researcher Name (Arabic)Researcher Name (English)Researcher TypeDr GradeEmail
مشاعل الخالدي M. A. Al-KhaldiResearcher  
آسيا طهA. A. TahaResearcher  

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