Conformational Analysis
Most stable conformation of n-butane is:
Select the correct option:
🔒 Solution Hidden from View
Submit your answer to unlock the detailed step-by-step solution.
More hydrocarbons Practice Questions
Considering rotation about the central carbon-carbon single bond of n-butane, which conformation rep...
Considering rotation about the central carbon-carbon single bond of n-butane, which conformation rep...
When 2-methylbutane undergoes monochlorination, several constitutional isomers form, and the total n...
When 2-methylbutane undergoes monochlorination, several constitutional isomers form, and the total n...
Benzene reacts with acetyl chloride in the presence of anhydrous aluminium chloride, and the major a...
Benzene reacts with acetyl chloride in the presence of anhydrous aluminium chloride, and the major a...
Propene is subjected to hydroboration with diborane followed by oxidation using alkaline hydrogen pe...
Propene is subjected to hydroboration with diborane followed by oxidation using alkaline hydrogen pe...
Among but-1-ene, cis-but-2-ene, trans-but-2-ene, and 2-methylpropene, the most thermodynamically sta...
Among but-1-ene, cis-but-2-ene, trans-but-2-ene, and 2-methylpropene, the most thermodynamically sta...
Restricted rotation about a carbon-carbon double bond can give rise to geometrical isomers, and the ...
Restricted rotation about a carbon-carbon double bond can give rise to geometrical isomers, and the ...
Bromine adds to cyclohexene to form a dibromide, and the stereochemical relationship between the two...
Bromine adds to cyclohexene to form a dibromide, and the stereochemical relationship between the two...
A hydrocarbon with the molecular formula C6H10 is being analysed, and the total number of degr...
A hydrocarbon with the molecular formula C6H10 is being analysed, and the total number of degr...
A planar cyclic conjugated species is being assessed for aromatic character, and the number of deloc...
A planar cyclic conjugated species is being assessed for aromatic character, and the number of deloc...
During the nitration of benzene using a mixture of concentrated nitric and sulphuric acids, the actu...
During the nitration of benzene using a mixture of concentrated nitric and sulphuric acids, the actu...
When methane is treated with chlorine in the presence of diffused sunlight, which species is primari...
When methane is treated with chlorine in the presence of diffused sunlight, which species is primari...
Among ethane, ethene, and ethyne, the relative ease with which a terminal hydrogen is removed as a p...
Among ethane, ethene, and ethyne, the relative ease with which a terminal hydrogen is removed as a p...
About This Question
- Subject
- chemistry
- Chapter
- hydrocarbons
- Topic
- conformational analysis
- Difficulty
- Medium
- Year
- 2025
Solution
Correct Answer:
Anti staggered (methyls 180° apart)
- Types of Strain:
- Torsional Strain: Repulsion between electron clouds of eclipsed bonds.
- Steric Strain: Physical crowding of bulky groups (e.g., methyl masses).
- Conformations of Butane:
- Eclipsed (0∘): Maximum strain (highest energy).
- Gauche (60∘): Staggered but methyl groups are close, causing some steric strain.
- Anti (180∘): Staggered and large methyl groups are as far apart as possible.
- Stability: The Anti-conformation maximizes distances between bulky methyl groups, minimizing both torsional and steric strain.
- Result: It is the global energy minimum (most stable).
This medium difficulty chemistry question is from the chapter hydrocarbons, covering the topic of conformational analysis. It appeared in the 2025 exam.
Looking for more practice? Explore all chemistry questions or browse hydrocarbons questions on RankGuru.