An oily, slightly water-soluble liquid, C7H6O2, having an almondlike odor: used chiefly in perfumery and in the synthesis of coumarin.
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Spectator Ions
Ions in a solution that do not participate in a chemical reaction.
Homogeneous Equilibria
Equilibria involving only one species in a single phase. For example, all gases, all liquids or all solids.
Emission Spectrum
Spectrum associated with emission of electromagnetic radiation by atoms (or other species) resulting from electronic transitions from higher to lower energy states.
Pauli Exclusion Principle
No two electrons in the same atom may have identical sets of four quantum numbers.
Conduction Band
A partially filled band or a band of vacant energy levels just higher in energy than a filled band, a band within which, or into which, electrons must be promoted to allow electrical conduction to occur in a solid.
Contact Process
Industrial process by which sulfur trioxide and sulfuric acid are produced from sulfur dioxide.
Specific Gravity
The ratio of the density of a substance to the density of water.
Law of Partial Pressures (Dalton's Law)
The total pressure exerted by a mixture of gases is the sum of the partial pressures of the individual gases.
Optical Activity
The rotation of plane polarized light by one of a pair of optical isomers.
Electrolytic Cells
Electrochemical cells in which electrical energy causes nospontaneous redox reactions to occur. An electrochemical cell in which chemical reactions are forced to occur by the application of an outside source of electrical energy.
