Electrical Conductances of Dilute Aqueous Solutions of Sodium Penicillin G, Potassium Penicillin G, and Potassium Penicillin V in the 278.15−313.15 K Temperature Range

2007 ◽  
Vol 111 (41) ◽  
pp. 11957-11967 ◽  
Author(s):  
Marija Bešter-Rogač ◽  
Matjaž Bončina ◽  
Yoram Apelblat ◽  
Alexander Apelblat
Keyword(s):  
Aqueous Solutions ◽  
Penicillin G ◽  
Temperature Range ◽  
Penicillin V ◽  
Electrical Conductances ◽  
Dilute Aqueous Solutions ◽  
Potassium Penicillin

H/D Isotope Effects in the Conductivity of Licl Aqueous Solutions in Sub and Supercritical State

2003 ◽  
Vol 2003 (1) ◽  
pp. 4-5
Author(s):  
Ibrahim M. Ismail ◽  
Massao Numora ◽  
Yoshio Masuko ◽  
Hiroshi Tomiyasu ◽  
Yasuhiko Fujii
Keyword(s):  
Aqueous Solutions ◽  
Isotope Effects ◽  
Electrical Conductance ◽  
Supercritical State ◽  
Temperature Range ◽  
Flow Type ◽  
Electrical Conductances

The electrical conductances of LiCl in H2O and D2O solutions were measured in the temperature range 373 - 673 K at pressures up to 37.27 MPa, using a flow type electrical conductance cell.

Optical activity of D-glyceraldehyde in aqueous solutions

1984 ◽  
Vol 49 (5) ◽  
pp. 1167-1172 ◽  
Author(s):  
Michal Fedoroňko
Keyword(s):  
Nmr Spectroscopy ◽  
Aqueous Solutions ◽  
Optical Activity ◽  
Equilibrium Mixture ◽  
Specific Rotation ◽  
Temperature Range ◽  
H Nmr ◽  
Dilute Aqueous Solutions

In dilute aqueous solutions, D-glyceraldehyde exists both in the free and hydrated monomeric forms; the equilibrium between them depends on the temperature. The specific rotation of the equilibrium mixture was measured polarimetrically in the temperature range from 20 to 80 °C, the concentrations of both forms being determined by 1H NMR spectroscopy. From these data, the specific rotations of both forms of D-glyceraldehyde in the indicated temperature range were calculated.

The reactions of oligoalcohols with arsenic, arsenous, boric and germanic acids

1980 ◽  
Vol 45 (10) ◽  
pp. 2645-2655 ◽  
Author(s):  
Antonín Mikan ◽  
Miloš Bartušek
Keyword(s):  
Aqueous Solutions ◽  
Equilibrium Constants ◽  
Dilute Aqueous Solutions

The reactions of sorbitol, mannitol, adonitol, dulcitol, glucose and glycerol with H3AsO4, H3AsO3, H3BO3 and GeO2 acids in dilute aqueous solutions were studied by potentiometric neutralization titrations. The formation of the following chelates was demonstrated: As(V)L3-, As(III)L(OH)2-, HAs(III)L(OH)2, BL2-, GeL2(OH)- and GeL32- and the equilibrium constants for their formation were found. Conditions for formation of these chelates of organic oligohydroxy compounds are discussed.

Study of potential oscillations during reaction of an aluminium single crystal with an aqueous KOH solution

1990 ◽  
Vol 55 (2) ◽  
pp. 345-353 ◽  
Author(s):  
Ivan Halaša ◽  
Milica Miadoková
Keyword(s):  
Aqueous Solutions ◽  
Single Crystal ◽  
Single Crystals ◽  
Periodic Potential ◽  
Optimum Conditions ◽  
Potential Oscillations ◽  
Dilute Aqueous Solutions ◽  
Experimental Findings ◽  
Kinetics Of

The authors investigated periodic potential changes measured on oriented sections of Al single crystals during spontaneous dissolution in dilute aqueous solutions of KOH, with the aim to find optimum conditions for the formation of potential oscillations. It was found that this phenomenon is related with the kinetics of the reaction investigated, whose rate also changed periodically. The mechanism of the oscillations is discussed in view of the experimental findings.

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