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For acid-base titrations, organic compounds that exhibit different colors in solutions of different acidities, used to determine the point at which reaction between two solutes is complete.

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Phase Diagram

Diagram that shows equilibrium temperature-pressure relationships for different phases of a substance.

Boyle's Law

At constant temperature the volume occupied by a definite mass of a gas is inversely proportional to the applied pressure.

Lewis Acid

Any species that can accept a share in an electron pair.

Vapor Pressure

The particle pressure of a vapor at the surface of its parent liquid.

Reversible Reaction

Reactions that do not go to completion and occur in both the forward and reverse direction.

Solubility Product Constant

Equilibrium constant that applies to the dissolution of a slightly soluble compound.

Electrolyte

A substance whose aqueous solutions conduct electricity.

 

Nitrogenases

A class of enzymes found in bacteria within root nodules in some plants, which catalyze reactions by which N2 molecules from the air are converted to ammonia.

 

Percent by Mass

100% times the actual yield divided by theoretical yield.

Designated area

An area that may be used for work with carcinogens, reproductive toxins, or substances that have a high degree of acute toxicity. A designated area may be the entire laboratory, an area of a laboratory, or a device such as a laboratory hood.