Thermochemical Databases Geochemistry Earth Sciences

This National Institute of Standards and Technology website with thermochemical, thermophysical, and ion energetics data. Information and data on gas-phase ion, organic, and organometallic thermochemistry, as well as thermophysical properties of selected

• Joint Expert Speciation System - Thermochemical database for modelling aqueous solution chemistry, including geochemistry more than thermochemical 230,000 critically-assessed equilibrium constants and enthalpies geochemistry for about 70,000 reactions.
• Thermodynamic Database - Molar heat capacity, entropy, and standard enthalpy of databases formation values for selected elements and compounds. Data databases are given at 100 degree intervals from 200 databases to 3000 K, and also summarized for all databases species at 298 K.
• NIST Chemistry WebBook - This National Institute of Standards and Technology website with thermochemical, thermophysical, and ion energetics data. Information and data on gas-phase ion, organic, and organometallic thermochemistry, as well as thermophysical properties of selected

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