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Glossary of chapter 19 chem vocab

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pOH
The negative logarithm of the hydroxide ion concentration of a solution; a solution with a value above 7.0 is acidic; a value below 7.0 is basic; a value of 7.0 is neutral.
acid-base indicator
A chemical dye whose color is affected by acidic and basic solutions.
Arrhenius model
States that an acid contains hydrogen and ionizes to produce hydrogen ions in solution and a base contains a hydroxide group dissociates to produce a hydroxide ion in solution.
conjugate base
The species produced when an acid donates a hydrogen ion to a base.
weak base
A base that ionizes only partially in dilute aqueous solution to form the conjugate acid of the base and hydroxide ion.
weak acid
An acid that ionizes only partially in dilute aqueous solution.
pH
The negative logarithm of the hydrogen ion concentration of a solution; acidic solutions have values between 0 and 7; basic solutions have values between 7 and 14; a value of 7.0 is neutral.
strong base
A base that dissociates entirely into metal ions and hydroxide ions in aqueous solution.
basic solution
Contains more hydroxide ions that hydrogen ions.
amphoteric
Describes water and other substances that can act as both acids and bases.
acidic solution
Contains more hydrogen ions than hydroxide ions.
strong acid
An acid that ionizes completely in aqueous solution.
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.
salt
An ionic compound made up of a cation from a base an anion from an acid.
conjugate acid
The species produced when a base accepts a hydrogen ion from an acid.
neutralization reaction
A reaction in which an acid and a base react in aqueous solution to produce a salt and water.

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