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

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Salicylate

A salt or ester of salicylic acid.

Shielding Effect

Electrons in filled sets of s , p orbitals between the nucleus and outer shell electrons shield the outer shell electrons somewhat from the effect of protons in the nucleus, also called screening effect.

Conjugated Double Bonds

Double bonds that are separated from each other by one single bond -C=C-C=C-.

Meniscus

The shape assumed by the surface of a liquid in a cylindrical container.

Octane Number

A number that indicates how smoothly a gasoline burns.

Exothermic

Describes processes that release heat energy.

Nonbonding Orbital

A molecular orbital derived only from an atomic orbital of one atom, lends neither stability nor instability to a molecule or ion when populated with electrons.

Plasma

A physical state of matter which exists at extremely high temperatures in which all molecules are dissociated and most atoms are ionized.

Semipermable Membrane

A thin partition between two solutions through which certain molecules can pass but others cannot.

Strong Electrolyte

A substance that conducts electricity well in a dilute aqueous solution.