20 terms

chapter 18

chemistry
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acidic solution
Contains more hydrogen ions than hydroxide ions
basic solution
solution that has less hydrogen than hydroxide ions
arrhenius model
A model of acids and bases; states that an acid is a substance that contains hydrogen and ionizes to produce hydrogen ions in aqueous solution and a base in a substance that contains a hydroxide group and dissociates to produce a hydroxide ion 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.
conjugate acid
The particle formed when a base gains a hydrogen ion
conjugate base
the particle that remains when an acid has donated a hydrogen ion
conjugate acid base pair
consists of two substances related to each other by donating and accepting of a single hydrogen ion
amphoteric
element able to react both as a base and as an acid.
lewis model
a lewis acid is an electron-pair acceptor and a lewis base is an electron-pair donor
strong acid
An acid that ionizes completely in aqueous solution
weak acid
Any acid that only partly dissociates in solution
strong base
A base that ionizes completely in an aqueous solution
weak base
A base that does not dissociate completely into ions in solution.
base ionization constant
the value of the equilibrium constant expression for the ionization of the base
pH
is a measure of the acidity or basicity of an aqueous solution. Solutions with a pH less than 7 are said to be acidic and solutions with a pH greater than 7 are basic or alkaline.
pOH
the negative of the common logarithm of the hydroxide ion concentration of a solution
salt
A compound made of minerals that, in water, dissolve and form electrolytes
acid base indicator
a compound that changes color when it is placed into an acidic or a basic solution
endpoint
the point in a titration at which the indicator changes color
buffer
A solution that minimizes changes in pH when extraneous acids or bases are added to the solution.