Binary Mixing Approximations and Relations between Specific Conductance, Molar Conductance, Equivalent Conductance, and Ionar Conductance for Mixtures†

1996 ◽  
Vol 100 (4) ◽  
pp. 1220-1226 ◽  
Author(s):  
Donald G. Miller
Keyword(s):  
Molar Conductance ◽  
Specific Conductance ◽  
Equivalent Conductance ◽  
Binary Mixing

Properties of Concentrated Solutions of Indium Chloride

1975 ◽  
Vol 53 (12) ◽  
pp. 1761-1764
Author(s):  
Alan N. Campbell
Keyword(s):  
Molar Volume ◽  
Activity Coefficients ◽  
Ionization Constant ◽  
Relative Viscosity ◽  
Specific Conductance ◽  
Concentrated Solutions ◽  
Degree Of Ionization ◽  
Indium Chloride ◽  
Solvent Water ◽  
Equivalent Conductance

Certain properties of concentrated solutions of indium trichloride, ranging in strength from 9.889 to 0.4070 m, have been investigated. These properties are: density, molar volume, specific and equivalent conductance, degree of ionization, ionization constant, relative viscosity, activities, and activity coefficients of solvent water and of solute. Two interesting results emerge, viz., the specific conductance passes through a maximum at 3.5 m, and, if the ionization of indium chloride is treated as that of a binary electrolyte, the expression α2c/(1 − α) is constant within 10% over the range 6.267 to 0.7363 m (13.90 to 2.122 N).

scholarly journals Development of a Novel Solid-State Sensor Electrode Based on Titanium Thin Film as an Indicator Electrode in Potentiometric and Conductometric Acid-Base Titration in Aqueous Solution

2012 ◽  
Vol 2012 ◽  
pp. 1-8 ◽  
Author(s):  
Nasser Abu Ghalwa
Keyword(s):  
Aqueous Solution ◽  
Titanium Substrate ◽  
Reference Electrode ◽  
Molar Conductance ◽  
Specific Conductance ◽  
Indicator Electrode ◽  
Acid Base ◽  
Solid State Sensor ◽  
Acid Base Titration ◽  
Ph Curve

A modified Ti/(SnO2+ Sb2O3) electrode was prepared by thermal deposition on titanium substrate and its use as indicator electrode to potentiometric and conductometric acid-base titration in aqueous solution at 298 K was developed. The E-pH curve is linear with slope of 0.0512 V/dec at 298 K. The standard potential of this electrode,E0, was determined with respect to the SCE as reference electrode. The recovery percentages for potentiometric and conductometric acid-base titration for acetic acid against NaOH were calculated. The cell constant, specific conductance, and the molar conductance with dilution for some common electrolytes were measured.

scholarly journals THE CONDUCTANCES OF AQUEOUS SOLUTIONS OF LITHIUM CHLORATE AT 25.00 °C. AND AT 131.8 °C.

1958 ◽  
Vol 36 (6) ◽  
pp. 1004-1012 ◽  
Author(s):  
A. N. Campbell ◽  
W. G. Paterson
Keyword(s):  
Aqueous Solutions ◽  
Relative Viscosity ◽  
Specific Conductance ◽  
Experimental Results ◽  
Equivalent Conductance ◽  
Versus Concentration

The conductances, densities, and viscosities of aqueous solutions of lithium chlorate have been obtained over the complete range of concentration at 131.8 °C. and up to saturation (and somewhat beyond) at 25.00 °C. The curve of specific conductance versus concentration passes through a maximum which does not shift noticeably in composition with change in temperature. There are no minima on the curves of equivalent conductance versus concentration. The relative viscosity of the solutions decreases with rise in temperature; this is the reverse of the effect usually observed.The experimental results have been compared with the calculated results, obtained by the use of the equations of Wishaw and Stokes and of Falkenhagen.

The Equivalent Conductance of Electrolytes in Mixed Solvents

1958 ◽  
Vol 17 (5_6) ◽  
pp. 300-314 ◽  
Author(s):  
Rayburn Whorton ◽  
Edward S. Amis
Keyword(s):  
Mixed Solvents ◽  
Equivalent Conductance

Synthesis, Spectral and Antimicrobial Investigation of 2-(Naphthalenel-ylamino)-2- Phenylacetonitrile and 1, 10-Phenanthroline with Five Divalent Transition Metal Ions

2019 ◽  
Vol 10 (01) ◽  
Author(s):  
Mohammed Al-Amery1 ◽  
Ashraf Saad Rasheed ◽  
Dina A. Najeeb
Keyword(s):  
Transition Metal ◽  
Metal Ions ◽  
Transition Metal Ions ◽  
Molar Conductance ◽  
Octahedral Geometry ◽  
Mixed Ligand ◽  
Gram Negative Bacteria ◽  
Magnetic Studies ◽  
Gram Positive Bacteria

Five new mixed ligand metal complexes have been synthesized by the reaction of divalent transition metal ions (Hg, Ni, Zn, Cu and Cd) with 2-(naphthalen-l-ylamino)-2-phenylacetonitrile (L1 ) and 1,10-phenanthroline (L2). The coordination likelihood of the two ligands toward metal ions has been suggested in the light of elemental analysis, UV-Vis spectra, FTIR, 1H-NMR, flam atomic absorption, molar conductance and magnetic studies. Results data suggest that the octahedral geometry for all the prepared complexes. Antibacterial examination of synthesized complexes in vitro was performed against four bacterias. Firstly, Gram-negative bacteria namely, Pseudomonas aerugin and Escherichia. Secondly, Gram-positive bacteria namely, Bacillus subtilis, Staphylococcuaurouss. Results data exhibit that the synthesized complexes exhibited more biological activity than tetracycline pharmaceutical.

Micellization Behaviour of Cationic Surfactants in the Presence of Food Additives: Conductance and Spectroscopic Investigations

2020 ◽  
Vol 10 ◽  
Author(s):  
Sonika Arti ◽  
Neha Aggarwal
Keyword(s):  
Glutamic Acid ◽  
Cationic Surfactants ◽  
Hydrophobic Interactions ◽  
Food Additives ◽  
Specific Conductance ◽  
Food Additive ◽  
Nmr Studies ◽  
Degree Of Ionization ◽  
Increase With Increase ◽  
Micellization Process

Aim: The micellization behavior of cationic surfactants have been studied in the presence of food additives. Objectives: Micellization behaviour of cationic surfactants, cetyltrimethylammonium bromide (CTAB) and tetradecyltrimethylammonium bromide (TTAB) has been studied in water and in various concentrations of salts (food additives) L-glutamic acid, sodium propionate, sodium citrate tribasic dihydrate and disodium tartrate dihydrate at (298.15, 308.15 and 318.15) K. Methods: Two methods used in the present study are specific conductance measurements and spectroscopy (NMR) studies. Results: From the specific conductance(κ), various parameters such as critical micelle concentration (CMC), degree of ionization of micelle (α), standard Gibbs free energy (ΔGom), enthalpy (ΔHom), and entropy (ΔSom) of micellization have also been calculated. Thermodynamic parameters related to the micellization process were also analyzed through NMR studies. Conclusion: The CMC values are influenced by the presence of food additive. The magnitude of CMC values increase with increase in concentration of food additive. In all the cases, enthalpy of micellization, ∆Hom values are found to be negative whereas entropy of micellization, ∆S om values are positive which indicate that hydrophobic interactions play a major role in the micellization process. Also, NMR studies reveal that tartrate and citrate are more hydrated than glutamic acid and propionate, resulting in more downfield shift.

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