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Chapter 15
Carboxylic Acid and Esters
32
Chemistry
Undergraduate 1
08/18/2006

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Term
carboxylic acids taste
Definition
sour
Term
The characteristic functional group of carboxylic acids is the
Definition
carboxyl group
Term
what are fatty acids
Definition
carboxylic acids with long hydrocarbon chains, generally 12 to 20 carbon atoms
Term
what suffix is used when naming carboxylic acids?
Definition
-oic and the word acid
Term
carboxylic acid with low MW are what state at room temperature?
Definition
liquid
Term
carboxylic acids smell
Definition
sharp or unpleasant
Term
As the MW of carboxylic acids increases, what happens to the melting point?
Definition
it also increases
Term
do carboxylic acids have a high or low boiling point?
Definition
high
Term
why do carboxylic acids have higher boiling points than alcohols?
Definition
because carboxylic acids are able to form two hydrogen bonds per molecule and alcohols are only able to form one
Term
dimer
Definition
a structure where two identical molecules are joined together
Term
are carboxylic acids soluble in water?
Definition
the smaller molecules are
Term
As the size of the carboxylic acid increases, what happens to the solubility of the molecule?
Definition
it decreases
Term
which hydrogen gives carboxylic acid its characteristic acidic behavior?
Definition
the hydrogen attached to the oxygen
Term
what would cause carboxylic acid to lose the hydrogen atom attached to the oxygen?
Definition
exposure to water
Term
when the hydrogen attached to the oxygen molecule leaves, what is the ion left behind called?
Definition
carboxylate ion
Term
are carboxylic acids considered weak or strong acids?
Definition
weak
Term
the addition of hydronium ion favors the formation of
Definition
carboxylic acid
Term
the removal of hydronium ions favors the formation of
Definition
carboxylate ions
Term
in a basic solution what is favored?
Definition
carboxylate ion
Term
carboxylic acids react readily with strong bases to form
Definition
salts
Term
what is the suffix used when naming carboxylic acid salts?
Definition
-ate
Term
what state are carboxylic acid salts in at room temperature?
Definition
solids
Term
are carboxylic acid salts soluble in water?
Definition
yes
Term
why are carboxylic acids soluble in water?
Definition
because they are ionic
Term
how are carboxylic esters formed
Definition
when carboxylic acids are heated with alcohols or phenols in the present of an acid catalyst
Term
ester linkage
Definition
the carbonyl carbon-oxygen single bond of the ester group
Term
condensation polymerization
Definition
in which monomers combine and form a polymer and a small molecule such as water
Term
what are two compounds that are more reactive than carboxylic acids and produce esters in good yield
Definition
carboxylic acid chlorides and anhydrides
Term
during the production of an ester, if there are two products the first product is an
Definition
ester
Term
what is the most important reaction of carboxylic esters?
Definition
the breaking of the ester linkage
Term
ester hydrolysis
Definition
the reaction of an ester with water to break an ester linkage and produce an alcohol and carboxylic acid
Term
what is the difference between ester hydrolysis and saphonification?
Definition
the product of saphonification is a salt
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