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Electrolytic cell for the commercial electrolysis of molten sodium chloride. For further information see Electrochemistry or Fuel Cells.

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Mass Action Expression

For a reversible reaction, aA + bB cC + dD the product of the concentrations of the products (species on the right), each raised to the power that corresponds to its coefficient in the balanced chemical equation, divided by the product of the concentrations of reactants (species on the left), each raised to the power that corresponds to its coefficient in the balanced chemical equation. At equilibrium the mass action expression is equal to K, at other times it is Q.[C]c[D]d [A]a[B]b = Q, or at equilibrium K.

Equivalent Weight

An oxidizing or reducing agent, who's mass gains (oxidizing agents) or loses (reducing agents) 6.022 x 1023 electrons in a redox reaction.
The mass of an acid or base that furnishes or reacts with 6.022 x 1023 H3O+ or OH- ions.

Electrochemistry

Study of chemical changes produced by electrical current and the production of electricity by chemical reactions.

Hydrophilic Colloids

Colloidal particles that repel water molecules.

Ampere

Unit of electrical current, one ampere equals one coulomb per second.

 

Mass

A measure of the amount of matter in an object. Mass is usually measured in grams or kilograms.

Mixture

A sample of matter composed of two or more substances, each of which retains its identity and properties.

Beta Particle

Electron emitted from the nucleus when a neuton decays to a proton and an electron.

Semiconductor

A substance that does not conduct electricity at low temperatures but does so at higher temperatures.

Radioactive Dating

Method of dating ancient objects by determining the ratio of amounts of mother and daughter nuclides present in an object and relating the ratio to the object?s age via half-life calculations.