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The thermodynamic state function of a system that indicates the amount of energy available for the system to do useful work at constant T and P.

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Emission Spectrum

Spectrum associated with emission of electromagnetic radiation by atoms (or other species) resulting from electronic transitions from higher to lower energy states.

 

Ioniztion

The breaking up of a compound into separate ions.

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Hydrophilic Colloids

Colloidal particles that repel water molecules.

Distillate

The material in a distillation apparatus that is collected in the receiver.

 

Thermodynamics

The study of the energy transfers accompanying physical and chemical processes.

Hydrogen-Oxygen Fuel Cell

Fuel cell in which hydrogen is the fuel (reducing agent) and oxygen is the oxidizing agent.

 

Le Chatelier's Principle

States that a system at equilibrium, or striving to attain equilibrium, responds in such a way as to counteract any stress placed upon it.
If a stress (change of conditions) is applied to a system at equilibrium, the system shifts in the direction that reduces stress.

Oxidation-reduction Reactions

Reactions in which oxidation and reduction occur, also called redox reactions.

Phosphorus Oxychloride

Colorless to slightly yellow fuming liquid.

Mol. Wt.: 153.39
M.P.: 20C
B.P.: 105.1C
Density: 1.685 @ 15.5C
Vapor Pressure: 40 mm @ 27.3C
Vapor Density: 5.3
Used as the phosphorus source for phosphorus diffusion.