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Example Questions
Example Question #171 : College Chemistry
Which of the following is a weak base?
Strong acids and bases are those that ionize completely in solution. In contrast, weak acids and bases ionize only partially in solution.
, hydrogen fluoride, is an example of a very strong acid. In solution, it dissolves completely to form
and
.
, sodium hydroxide, is an example of a very strong base. In solution, it dissolves completely to form
and
.
, acetic acid, is an example of a weak acid. In solution, it dissolves partially to form
and
.
, ammonia, is an example of a weak base. In solution, it accepts a proton to form
and
.
Example Question #31 : Acid Base Reactions
reacts with
in aqueous solution according to the chemical equation provided. If it took
of a
solution to titrate
of an
solution, what was the concentration of original
solution?
Using the concentration of as a conversion factor, we can convert the volume of
to moles by dimensional analysis:
At the equivalence point of the titration:
Example Question #1 : Strong And Weak Acids/Bases
Determine the acid dissociation constant expression for the given reaction.
Acid dissociation constant which is denoted as is the equilibrium constant for the ionization of an acid. Therefore, the numerator contains the product of the concentrations of the substances on the product side of the chemical equation. The denominator contains the product of the concentrations of the substances on the reactant side of the chemical equation.
is omitted in the acid dissociation constant expression because as the solvent it is in excess and therefore the change in its concentration is negligible in comparison to the other substances in solution.
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