Acid ionization constant: For the equilibrium the acid ionization constant is defined as:

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Bronsted-Lowry acid: A molecule or ion that donates a proton.

Bronsted-Lowry base: A molecule or ion that accepts a proton.

Conjugate acid: The structure that results when a Bronsted-Lowry base accepts a proton.

Conjugate base: The structure that results when a Bronsted-Lowry acid donates a proton.

Inductive effect: The effect of an atom or group of atoms on the electron density in a part of the molecule which is separated by at least two single bonds.

Lewis acid: A molecule or ion that accepts a pair of electrons to form a new covalent bond.

Lewis base: A molecule or ion that donates a pair of electrons to form a new covalent bond.

pK_a: The negative logarithm of the K_a; pK_a = -log K_a.

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