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By convention, potential, Eo, of a half-reaction as a reduction relative to the standard hydrogen electrode when all species are present at unit activity.

 

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Lewis Base

Any species that can make available a share in an electron pair.

Effective Collisons

Collision between molecules resulting in a reaction, one in which the molecules collide with proper relative orientations and sufficient energy to react.

 

Secondary Voltaic Cells

Voltaic cells that can be recharged, original reactanats can be regenerated be reversing the direction of the current flow.

Chemical Hygiene Plan (CHP)

A written program developed and implemented by an employer designating proceedures, equipment, personal protective equipment, and work practices that are capable of protecting employees from the health hazards presented by hazardous chemicals usid in that particular workplace.

Molecular Formula

Formula that indicates the actual number of atoms present in a molecule of a molecular substance.

PseudobinaryIonic Compounds

Compounds that contain more than two elements but are named like binary compounds.

Miscibility

The ability of one liquid to mix with (dissolve in) another liquid.

Active Metal

Metal with low ionization energy that loses electrons readily to form cations.

Alkynes

Unsaturated hydrocarbons that contain one or more carbon-carbon triple bonds.

Ionization Constant

Equilibrium constant for the ionization of a weak electrolyte.

Fatty Acids

An aliphatic acid, many can obtained from animal fats.

Evaporation Rate

The rate at which a particular substance will vapourize (evaporate) when compared to the rate of a known substance such as ethyl ether. This term is especially useful for health and fire-hazard considerations.

Percentage Ionization

The percentage of the weak electrolyte that ionizes in a solution of given concentration.

Critical Point

The combination of critical temperature and critical pressure of a substance.

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.

Molarity

Number of moles of solute per litre of solution.

Saccharate

A compound formed by interaction of sucrose with a metallic oxide, usually lime, and useful in the purification of sugar.

 

Domain

A cluster of atoms in a ferromagnetic substance, all of which align in the same direction in the presence of an external magnetic field.

yield

The quantity of product formed by the interaction of two or more substances, generally expressed as a percentage of the quantity obtained to that theoretically obtainable.

Catenation

Bonding of atoms of the same element into chains or rings.
The bonding together of atoms of the same element to form chains.
The ability of an element to bond to itself.