Chemistry Homework
1. Which molecule is a carboxylic acid?
A)
B)
C)
D)
E) CH3CH2CH2NH2
2. Which molecule is an amide?
A)
B)
C)
D)
E) CH3CH2CH2NH2
3. Which molecule shown is β-hydroxy butyric acid?
A)
B)
C)
D)
E)
4. All of the statements about carboxylic acids are true except
A) they undergo substitution reactions involving the -OH group.
B) at low molecular weights they are liquids with sharp stinging odors.
C) they form hydrogen bonds, causing their boiling points to be higher than expected on the basis of molecular weight.
D) they react with bases to form salts which are often more soluble than the original acid.
E) when they behave as acids, the -OH group is lost leaving the CO– ion.
5. What is the IUPAC name of the molecule shown?
A) ethyl butanoate
B) butyl ethanoate
C) acetyl butyrate
D) butyl acetate
E) 2-hexanoic ester
6. An alpha hydroxy carboxylic acid has an additional -OH group attached to the molecule at which location?
A) the carbonyl carbon atom
B) the #2 carbon atom
C) the carbon atom farthest from the carboxyl group
D) the carbon atom that contains the amine group
E) none of the above
7. ) Which equation correctly represents the dissociation of a carboxylic acid in water?
A) CH3COOH + H2O CH3CHCOOH2+ + OH–
B) CH3COOH CH3COO– + H+
C) CH3COOH + H2O CH3COO– + H3O+
D) CH3COOH + H3O+ CH3COOH2+ + H2O
E) CH3COOH + 2 H2O CH3COO2- + 2 H3O+
8. The ion formed from a carboxylic acid is called the
A) carboxylate anion.
B) carboxylate cation.
C) ester anion.
D) ester cation.
E) amide cation.
9. When an alcohol reacts with a carboxylic acid the major product is
A) an amide.
B) an amine.
C) an ester.
D) a salt.
E) a soap.
10. The reactants needed to produce simple polyamides (nylons) are
A) diacids and dialcohols.
B) diacids and diamines
C) diamines and dialcohols.
D) alkenes and catalysts.
E) diacids and phosphates.
11. The potassium or sodium salt of a long chain carboxylic acid is called a
A) soap.
B) triglyceride.
C) ester.
D) emollient.
E) none of the above
