Sites of interest
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A comprehensive database of equilibrium constants developed by Leslie Pettit
and Gwyneth Pettit.
Screen examples (Academic Software web site)
|Soleq. Leslie Pettit and Kip Powell have produced an interactive tutorial package which deals with all aspects of SOLution EQuilibria. Many sample tutorials can be downloaded free of charge from this site.(view contents)|
Academic Software Free downloads including .Equilibria in Aqueous Solutions, a collection of utility programs for matters relating to ionic strength effects, salinity effects, temperature effects, activity coefficients, O2 solubility and much more (view contents page)
JESS A powerful research tool for modelling chemical speciation in complex aqueous environments. It is designed to solve problems requiring expert knowledge of solution chemistry. It currently comprises over 250 programs, 2000 subroutines and 234,000 lines of Fortran code
|ChemEQL Calculates and draws thermodynamic equilibrium concentrations of species in complex chemical systems. It handles homogeneous solutions, dissolution, precipitation, titrations with acids, bases, or other components. Adsorption on up to five different particulate surfaces can be modeled with the choice of the Constant Capacitance, Diffuse Layer (Generalized Two Layer), Basic Stern Layer, or Triple Layer model to consider surface charges. Corrections for ionic strength can be made and activities calculated. Kinetic reactions can be simulated with one rate determining process in a system of otherwise fast thermodynamic chemical equilibrium. Libraries with over 1750 thermodynamic stability constants and more than 300 solubility products. ChemEQLruns on MacOSX, Windows, Linux, and Solaris.|
|WINSGW A speciation
program derived from HALTAFALL, previously known as SOLGASWATER. Now available
as a Windows application,.
Software tools for the quantitative analysis of kinetic processes from Jplus Consulting Ltd.
Fitting of multi-wavelength spectroscopic data to kinetic reaction mechanisms in order to determine rate and equilibrium constants as well as the spectra and concentration profiles of all participating chemical species.
NIST Standard Reference Database 46
IUPAC-NIST solubility database
Solubility products of simple inorganic compounds
Organic acids and bases
NIST Chemistry Web book
- Thermochemical data for over 7000 organic and small inorganic compounds
- Reaction thermochemistry data for over 8000 reactions.
|State of the art instrumentation for pKa and log p determination. Spectrophotometric pKa determination. Analytical services, including pKa measurement.|
|Titrino and Titrando ranges for potentiometric titration|
|TitraLab systems for potentiometric titration|
|Titroline alpha plus|
|Excellence line titrators "One Click Titration™ "|
For a very low-cost option consider using a Brand or Digitrate digital burette (piston burette operated manually)
Titration data can be obtained with Agilent/Cary spectrophotometers.
Stability Constants home page