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CHEM 131 EXAM FALL 2024 VERIFIED QUESTIONS AND ANSWERS GRADED A+
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CHEM 131 EXAM FALL 2024 VERIFIED QUESTIONS AND ANSWERS GRADED A+
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CHEM 131 EXAM FALL 2024CHEM 131 EXAM FALL 2024 VERIFIED QUESTIONS
AND ANSWERS GRADED A+
Esters are synthesized from the reaction of a:
a. Carboxylic acid and a ketone
b. Alcohol and a haloalkane
c. Carboxylic acid and alcohol
d. Haloalkane and alkene
c. Carboxylic acid and alcohol
Which statement is NOT true about lipids?
a. Lipids are biomolecules that contain fatty acids.
b. Lipids are not soluble inrr organic solvents but are soluble in water.
c. Lipids are an important feature in cell membranes, fat soluble vitamins, and
steroid hormones.
d. Lipids are characterized by their structures.
a. Lipids are not soluble inorganic solvents but are soluble in water.
CH3-CH=CH-CH3+H2-> CH3-CH2-CH2-CH3
Name this reaction:
a. Hydration
,CHEM 131 EXAM FALL 2024
b. Hydrogenation
c. Polymerization
d. Hydrolysis
b. Hydrogenation
What does it mean when in an alkene, the double bond is rigid?
a. It means it's trigonal pyramidal
b. It means it has trans isomers
c. It means there is no rotation possible around the double bond
d. It means it has cis isomers
c. It means there is no rotation possible around the double bond
Why does hexane have a higher boiling point than 2,3-dimethylbutane?
a. Because hexane is longer than butane
b. Because hexane is alphabetically first
c. Because dimethylbutane has a higher melting point
d. Because branched alkanes have fewer attractions
d. Because branched alkanes have fewer attractions
,CHEM 131 EXAM FALL 2024
1n which functional group does the hydroxyl group replace the hydrogen atom
attached to a benzene ring
a. Phenol
b. Alcohol
c. Hydroxyl
d. Thiol
a. Phenol
What does it mean when an alcohol is called a secondary (2 degree) alcohol?
a. It has a bond angle of 180 degrees
b. It has two alkyl groups attached to the carbon atom bonded to the -OH group
c. It can rotate two ways
d. Nothing, this is only true for cyclic alcohols
It has two alkyl groups attached to the carbon atom bonded to the -OH group
What is the product of the oxidation of tertiary alcohols?
a. Aldehydes
b. Ketones
c. Ethers
d. There is no product because C-C bonds are usually too strong to oxidize
d. There is no product because C-C bonds are usually too strong to oxidize
, CHEM 131 EXAM FALL 2024
If aldehydes and ketones both contain a carbonyl group, how can you differentiate
between compounds from each family?
a. In ketones the carbon of the carbonyl group is bonded to at least one hydrogen
atom
b. in aldehydes the carbon of the carbonyl group is bonded to at least one hydrogen
atom
c. aldehydes have a strong dipole
d. the atoms are arranged differently
b. in aldehydes the carbon of the carbonyl group is bonded to at least one hydrogen
atom
If an aldehyde and an alkane have the same molar mass why would the aldehyde
have the higher boiling point?
a. Alcohols do not have dipole-dipole attractions
b. aldehydes do not have dipole-dipole attractions
c. Alkenes do not have dipole-dipole attractions
d. Alkanes do not have dipole-dipole attractions
d. Alkanes do not have dipole-dipole attractions
Why are aldehydes and ketones with five or more carbon atoms not soluble?
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