Q. What is the ionization energy trend in the periodic table?
A.
Increases down a group
B.
Decreases across a period
C.
Increases across a period
D.
Decreases down a group
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Solution
Ionization energy generally increases across a period due to increasing nuclear charge.
Correct Answer:
C
— Increases across a period
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Q. What is the IUPAC name for CH3-CH(OH)-CH2-COOH?
A.
2-Hydroxybutanoic acid
B.
3-Hydroxybutanoic acid
C.
Butanoic acid
D.
Butanol
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Solution
The compound has a hydroxyl group on the second carbon and a carboxylic acid group, making it 2-hydroxybutanoic acid.
Correct Answer:
A
— 2-Hydroxybutanoic acid
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Q. What is the IUPAC name for the compound CH3-CH(OH)-CH2-COOH?
A.
3-Hydroxybutanoic acid
B.
2-Hydroxybutanoic acid
C.
Butanoic acid
D.
Butanol
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Solution
The compound has a hydroxyl group on the second carbon of a four-carbon chain with a carboxylic acid, making it 2-Hydroxybutanoic acid.
Correct Answer:
B
— 2-Hydroxybutanoic acid
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Q. What is the IUPAC name for the compound CH3-CH2-CH(CH3)-C(=O)OH?
A.
3-Methylbutanoic acid
B.
2-Methylbutanoic acid
C.
4-Methylbutanoic acid
D.
Pentanoic acid
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Solution
The longest chain has four carbons with a carboxylic acid group, making it 2-Methylbutanoic acid.
Correct Answer:
B
— 2-Methylbutanoic acid
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Q. What is the IUPAC name for the compound CH3-CH2-CH(CH3)-CH2-Br?
A.
1-bromo-3-methylbutane
B.
2-bromo-3-methylbutane
C.
3-bromo-2-methylbutane
D.
1-bromo-2-methylbutane
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Solution
The longest carbon chain has four carbons, and the bromine is on the first carbon when numbering from the end closest to the substituent.
Correct Answer:
A
— 1-bromo-3-methylbutane
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Q. What is the IUPAC name for the compound CH3-CH2-CH(CH3)-CH2-CH3?
A.
2-pentene
B.
3-pentanol
C.
3-methylpentane
D.
2-methylpentane
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Solution
The longest carbon chain has five carbons, and the methyl group is on the third carbon, making the IUPAC name 3-methylpentane.
Correct Answer:
C
— 3-methylpentane
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Q. What is the IUPAC name for the compound CH3-CH2-CH(CH3)-C≡C-CH2-CH3?
A.
3-heptyne
B.
2-heptyne
C.
4-heptyne
D.
1-heptyne
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Solution
The longest carbon chain containing the triple bond has 7 carbons, and the triple bond starts at carbon 3, making it 3-heptyne.
Correct Answer:
A
— 3-heptyne
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Q. What is the IUPAC name for the compound CH3-CH2-CH(CH3)-OH?
A.
2-Propanol
B.
1-Butanol
C.
3-Butanol
D.
2-Butanol
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Solution
The longest carbon chain has four carbons, and the hydroxyl group is on the second carbon, making it 2-Butanol.
Correct Answer:
D
— 2-Butanol
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Q. What is the IUPAC name for the compound CH3-CH2-CH2-CH2-NH2?
A.
Butanamine
B.
Pentanamine
C.
Hexanamine
D.
Propylamine
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Solution
The compound has four carbon atoms and an amine functional group, making it butanamine.
Correct Answer:
A
— Butanamine
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Q. What is the IUPAC name for the compound CH3-CH2-CH2-CH2-OH?
A.
Butanol
B.
Pentanol
C.
Hexanol
D.
Propyl alcohol
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Solution
The compound has four carbon atoms and a hydroxyl group, making it butanol.
Correct Answer:
A
— Butanol
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Q. What is the IUPAC name for the compound CH3-CH2-CH2-CH=CH2?
A.
1-pentene
B.
2-pentene
C.
3-pentene
D.
1-butene
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Solution
The longest carbon chain containing the double bond has 5 carbons, and the double bond starts at the first carbon, making it 1-pentene.
Correct Answer:
A
— 1-pentene
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Q. What is the IUPAC name for the compound CH3-CH2-CH2-CHO?
A.
Butanal
B.
Pentanal
C.
Propionaldehyde
D.
Butyric aldehyde
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Solution
The compound is butanal, as it has four carbon atoms and an aldehyde functional group.
Correct Answer:
A
— Butanal
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Q. What is the IUPAC name for the compound CH3-CH2-COOH?
A.
Propanoic acid
B.
Butanoic acid
C.
Acetic acid
D.
Methanoic acid
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Solution
The compound has three carbon atoms and a carboxylic acid functional group, making it propanoic acid.
Correct Answer:
A
— Propanoic acid
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Q. What is the IUPAC name for the compound CH3-CH2-O-CH2-CH3?
A.
Ethyl methyl ether
B.
Diethyl ether
C.
Ethoxyethane
D.
Methyl ethyl ether
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Solution
The correct IUPAC name for CH3-CH2-O-CH2-CH3 is ethoxyethane.
Correct Answer:
C
— Ethoxyethane
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Q. What is the IUPAC name for the compound CH3-CH=CH-CH2-CH3?
A.
1-Pentene
B.
2-Pentene
C.
3-Pentene
D.
Butene
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Solution
The compound is named 2-pentene because the double bond is located between the second and third carbon atoms.
Correct Answer:
B
— 2-Pentene
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Q. What is the IUPAC name for the compound CH3OCH2CH3?
A.
Ethyl methyl ether
B.
Methyl ethyl ether
C.
Dimethyl ether
D.
Ethoxyethane
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Solution
The compound CH3OCH2CH3 is commonly known as ethyl methyl ether, indicating the two different alkyl groups attached to the ether oxygen.
Correct Answer:
A
— Ethyl methyl ether
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Q. What is the IUPAC name for the compound CH₃-CH₂-CH(CH₃)-CH₂OH?
A.
2-Butanol
B.
3-Pentanol
C.
1-Butanol
D.
2-Pentanol
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Solution
The IUPAC name for CH₃-CH₂-CH(CH₃)-CH₂OH is 2-Pentanol, as the longest chain has five carbons and the hydroxyl group is on the second carbon.
Correct Answer:
D
— 2-Pentanol
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Q. What is the IUPAC name for the compound with the formula C2H4Cl2?
A.
1,1-dichloroethane
B.
1,2-dichloroethane
C.
2,2-dichloroethane
D.
Chloroethane
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Solution
The compound C2H4Cl2 has two chlorine atoms on the second carbon of the ethane chain, making its IUPAC name 1,2-dichloroethane.
Correct Answer:
B
— 1,2-dichloroethane
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Q. What is the IUPAC name for the compound with the formula C3H4?
A.
Propene
B.
Propyne
C.
Cyclopropane
D.
Propane
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Solution
C3H4 is an alkyne, specifically propyne, as it contains a triple bond.
Correct Answer:
B
— Propyne
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Q. What is the IUPAC name for the compound with the formula C3H6O?
A.
Propanal
B.
Propan-2-one
C.
Cyclopropanol
D.
Propene
Show solution
Solution
The compound C3H6O is propan-2-one, which is a ketone with the carbonyl group on the second carbon.
Correct Answer:
B
— Propan-2-one
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Q. What is the IUPAC name for the compound with the formula C4H10?
A.
Butane
B.
Butene
C.
Butyne
D.
Cyclobutane
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Solution
C4H10 is an alkane and is named butane, as it contains only single bonds.
Correct Answer:
A
— Butane
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Q. What is the IUPAC name for the compound with the formula C4H8 that has a double bond and a methyl group on the second carbon?
A.
2-methylbut-1-ene
B.
3-methylbut-1-ene
C.
2-methylbut-2-ene
D.
but-2-ene
Show solution
Solution
The correct IUPAC name is 2-methylbut-1-ene, as the double bond is between the first and second carbon.
Correct Answer:
A
— 2-methylbut-1-ene
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Q. What is the IUPAC name for the compound with the formula C4H8O2 that contains an ester functional group?
A.
Butanoic acid
B.
Ethyl acetate
C.
Butyl acetate
D.
Propanoic acid
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Solution
The compound is ethyl acetate, which is an ester derived from ethanol and acetic acid.
Correct Answer:
B
— Ethyl acetate
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Q. What is the IUPAC name for the compound with the formula C4H8O2 that has a double bond and a carboxylic acid functional group?
A.
Butenoic acid
B.
Butanoic acid
C.
2-Butenoic acid
D.
Butyric acid
Show solution
Solution
The compound is 2-Butenoic acid, as it has a double bond and a carboxylic acid functional group.
Correct Answer:
C
— 2-Butenoic acid
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Q. What is the IUPAC name for the compound with the formula C4H8O2 that has a double bond and a carboxylic acid group?
A.
Butenoic acid
B.
Butanoic acid
C.
2-Butenoic acid
D.
3-Butenoic acid
Show solution
Solution
The compound has a double bond and a carboxylic acid group, making it Butenoic acid.
Correct Answer:
A
— Butenoic acid
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Q. What is the IUPAC name for the compound with the formula C4H9Br?
A.
1-bromobutane
B.
2-bromobutane
C.
1-bromopropane
D.
2-bromopropane
Show solution
Solution
The compound C4H9Br corresponds to 1-bromobutane, as it has a straight-chain structure with the bromine on the first carbon.
Correct Answer:
A
— 1-bromobutane
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Q. What is the IUPAC name for the compound with the formula C5H10?
A.
Pentane
B.
Cyclopentane
C.
2-Pentene
D.
1-Pentene
Show solution
Solution
C5H10 is an alkene and can be named as pentene, but without specifying the position, it is simply pentane.
Correct Answer:
A
— Pentane
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Q. What is the IUPAC name for the compound with the formula C5H10O that contains a ketone functional group?
A.
2-Pentanone
B.
3-Pentanone
C.
1-Pentanone
D.
Pentanal
Show solution
Solution
The compound is a ketone with five carbon atoms. The longest carbon chain is pentane, and the ketone group is on the second carbon, making the IUPAC name 2-Pentanone.
Correct Answer:
A
— 2-Pentanone
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Q. What is the IUPAC name for the compound with the formula C5H10O that has a carbonyl group on the second carbon?
A.
2-pentanone
B.
3-pentanone
C.
2-pentanol
D.
Pentanal
Show solution
Solution
The compound is a ketone with the carbonyl group on the second carbon, making it 2-pentanone.
Correct Answer:
A
— 2-pentanone
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Q. What is the IUPAC name for the compound with the formula C5H10O2 that contains an ester functional group?
A.
Pentanoic acid
B.
Ethyl butanoate
C.
Butyl acetate
D.
2-Pentenoic acid
Show solution
Solution
The compound C5H10O2 is an ester, and the correct IUPAC name is ethyl butanoate, derived from butanoic acid and ethanol.
Correct Answer:
B
— Ethyl butanoate
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