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Negative logarithm of the concentration (mol/L) of the H3O+[H+] ion, scale is commonly used over a range 0 to 14.

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Phase Diagram

Diagram that shows equilibrium temperature-pressure relationships for different phases of a substance.

Half-Cell

Compartment in which the oxidation or reduction half-reaction occurs in a voltaic cell.

Polar Bond

Covalent bond in which there is an unsymmetrical distribution of electron density.

Rate-determining Step

The slowest step in a mechanism, the step that determines the overall rate of reaction.

Density

Density is the ratio b/w Mass and Volume: D=M/V

Crystal Field Theory

Theory of bonding in transition metal complexes in which ligands and metal ions are treated as point charges, a purely ionic model, ligand point charges represent the crystal (electrical) field perturbing the metal?s d orbitals containing nonbonding electrons.

Dilution

Process of reducing the concentration of a solute in solution, usually simply by mixing with more solvent.

Joule

A unit of energy in the SI system. One joule is 1 kg. m2/s2 which is also 0.2390 calorie.

Colligative Properties

Physical properties of solutions that depend upon the number but not the kind of solute particles present.

Inner Orbital Complex

Valence bond designation for a complex in which the metal ion utilizes d orbitals for one shell inside the outermost occupied shell in its hybridization.