Isomerism and Stereochemistry - Problem Set
Q. What is the correct IUPAC name for the compound with the structure CH3-CH2-CH(CH3)-C(CH3)2-CH3?
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A.
3,3-dimethylpentane
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B.
2,2-dimethylhexane
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C.
2-methylhexane
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D.
3-methylpentane
Solution
The longest chain has five carbons (pentane) with two methyl groups on the third carbon, making it 3,3-dimethylpentane.
Correct Answer: A — 3,3-dimethylpentane
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Q. Which of the following compounds is a structural isomer of C4H10?
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A.
2-methylpropane
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B.
butane
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C.
cyclobutane
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D.
1-butyne
Solution
2-methylpropane is a structural isomer of butane, both having the same molecular formula C4H10.
Correct Answer: A — 2-methylpropane
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