Submitted by ChemPRIME Staff on Thu, 12/09/2010 - 13:58
Here are some Resources (typically found in your appendix).
- Atomic Radii and Ionic Radii
- Postulates of the Kinetic Theory of Gases
- Covalently Bonded Polyatomic Ions
- General Rules for Predicting Electron Configurations
- Ionization Energies and Electron Affinities
- Rules for Finding Oxidation Numbers
- Table of Electronegativities
- Table of Molar Enthalpies of Fusion and Vaporization
- Table of Some Standard Enthalpies of Formation at 25°C
- Table of Standard Molar Entropies
- Ground State Electron Configurations
- Physical Constants
- Series of Oxidation Activity for Some Common Metals
- Table of Acid and Base Constants
- Table of Solubility Products for Some Sparingly Soluble Salts at 25°C
- Table of Some Standard Free Energies of Formation at 298.15 K (25°C)
- Table of Standard Reduction Potentials
Term of the Day
In a titrationThe gradual addition of one solution to another until the chemical amount of one reactant being added matches stoichiometrically the amount of another reactant in the solution initially present., the minimum volume of titrant that must be added to cause a sudden change in a physical propertyA characteristic of a material that can be measured without changing the material's chemical composition. (such as color of an indicatorA substance for which a physical property (such as color) changes abruptly when the equivalence point is reached in a titration., pHA logarithmic measure of the concentration of hydrogen (hydronium) ion; pH = -log10([H+]) or pH = -log10([H3O+])., conductivity, or absorbanceA measure of the quantity of light that does not pass through a sample. Absorbance is the negative lograrithm of the transmittance. Transmittance is the fraction of incident light that passes through a sample. In the visible region of the spectrum, absorbance occurs when a material uses the energy from light to change the energy level of the material's electrons. Because different materials have different electronic energy states, they absorb light of different wavelengths.). The end pointIn a titration, the minimum volume of titrant that must be added to cause a sudden change in a physical property (such as color of an indicator, pH, conductivity, or absorbance). The end point should match the equivalence point as closely as possible should match the equivalence pointThe point in a titration at which the amount of one reactant being added stoichiometrically matches the amount of another reactant initially present. The end point should match the equivalence point as closely as possible. as closely as possible
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