Premium
Thermodynamics of Ion‐Association of NaClO 4 in Aqueous‐Methanol and Aqueous‐Glycerol Using Conductance Measurements
Author(s) -
Emara Mostafa M.,
Shehata Hassan A.,
El Nkhaily Sayed H.
Publication year - 1988
Publication title -
journal of the chinese chemical society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.329
H-Index - 45
eISSN - 2192-6549
pISSN - 0009-4536
DOI - 10.1002/jccs.198800050
Subject(s) - chemistry , conductance , aqueous solution , endothermic process , methanol , ion association , analytical chemistry (journal) , glycerol , inorganic chemistry , ion , ionic bonding , thermodynamics , chromatography , organic chemistry , adsorption , physics , mathematics , combinatorics
The conductance of NaClO 4 at (25–45)°C in methanol‐H 2 O, and glycerol‐H 2 O mixtures in a concentration range up to 10 −2 M has been measured. The association constant, K A , values have been determined, where the conductometric data were analysed by a M S X computer using the Fuoss‐Aprano method. The K A values for NaClO 4 in methanol‐H 2 O are higher than in glycerel‐H 2 O mixtures, Also K A values increase as the proportional of methanol or glycerol increases in mixture. The thermodynamic parameters ΔH°, ΔG°, and ΔS° were also calculated. It is obvious that the entire process of the ionic association in those systems are endothermic ones. The Walden products, Λ o η were calculated for all systems investigated.