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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.

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Homogeneous Equilibria

Equilibria involving only one species in a single phase. For example, all gases, all liquids or all solids.

Continuous Spectrum

Spectrum that contains all wave-lengths in a specified region of the electromagnetic spectrum.

Photon

A packet of light or electromagnetic radiation, also called quantum of light.

 

Mole Fraction

The number of moles of a component of a mixture divided by the total number of moles in the mixture.

 

Absolute Entropy (of a substance)

The increase in the entropy of a substance as it goes from a perfectly ordered crystalline form at 0 °K (where its entropy is zero) to the temperature in question.

Entropy is a measure of the “dilution” of thermal energy.

Polarization

The buildup of a product of oxidation or a reduction of an electrode, preventing further reaction.

Coordination Isomers

Isomers involving exchanges of ligands between complex cation and complex anion of the same compound.

Mass Spectrometer

An instrument that measures the charge-to-mass ratio of charged particles.

Hydrate

A solid compound that contains a definite percentage of bound water.

Nonpolar Bond

Covalent bond in which electron density is symmetrically distributed.