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One equivalent weight of a substance is produced at each electrode during the passage of 96,487 coulombs of charge through an electrolytic cell.

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Condensation

Liquefaction of vapor.

Polydentate

Refers to ligands with more than one donor atom.

Molecular Orbital Theory

A theory of chemical bonding based upon the postulated existence of molecular orbitals.

Band

A series of very closely spaced, nearly continuous molecular orbitals that belong to the crystal as a whole.

Polyprotic Acid

An Acid that can form two or more hydronium ions per molecule, often a least one step of ionization is weak.

Chemical Periodicity

The variations in properties of elements with their position in the periodic table.

Substitution Reaction

A reaction in which an atom or a group of atoms is replaced by another atom or group of atoms.

Coke

An impure form of carbon obtained by destructive distillation of coal or petroleum.

Aryl Group

Group of atoms remaining after a hydrogen atom is removed from the aromatic system.

Collision Theory

Theory of reaction rates that states that effective collisions between reactant molecules must occur in order for the reaction to occur.