Chapter 19 Vocabulary

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Acidic Solution
Contains more hydrogen ions than hydroxide ions
Amphoteric
Describes water and other substances that can act as both acids and bases
Arrhenius Model
A model of acids and basis; states that an acid is a substance that contains hydrogen and ionizes to produce hydrogen ions in aqueous solution and a base is a substance that contains a hydroxide group and dissociates to produce a hydroxide ion in aqueous solution
Basic Solution
Contains more hydroxide ions than hydrogen ions
Bronsted-Lowry Model
A model of acids and bases in which an acid is a hydrogen-ion donor and a base is a hydrogen-ion acceptor
Buffer
A solution that resists changes in pH when limited amount or acid or base are added
Buffer Capacity
The amount of acid or base a buffer solution can absorb without a significant change in pH
Conjugate Acid
The species produced when a base accepts a hydrogen ion from an acid
Conjugate Acid-Base Pair
Consists of two substances related to each other by the donating and accepting of a single hydrogen ion
Conjugate Base
The species produced when an acid donates a hydrogen ion to a base
End Point
The point at which the indicator that is used in a titration changes color
Equivalence Point
The stoichiometric point of a titration
Neutralization Reaction
A reaction in which an acid and a base react in aqueous solution to produce a salt and water
pH
The negative logarithm of the hydrogen ion concentration of a solution; acidic solutions have pH values between 0 and 7, basic solutions have values between 7 and 14, and a solution with a pH of 7.0 is neutral
pOH
The negative logarithm f the hydroxide ion concentration of a solution; a solution with a pOH above 7.0 is acidic, a solution with a pOH below 7.0 is basic, and a solution with a pOH of 7.0 is neutral
Salt
An ionic compound made up of a cation form a base and an anion from an acid
Strong Acid
An acid that ionizes completely in aqueous solution
Strong Base
A base that dissociates entirely into metal ions and hydroxide ions in aqueous solution
Titration
The process in which an acid-base neutralization reaction is used to determine the concentration of a solution of unknown concentration
Weak Base
A base that ionizes only partially in dilute aqueous solution to form the conjugate acid or the base and hydroxide ion