Asked in HEC Phase II 2017 2017Moderate

How many chain isomer can be obtained from alkane C6H14 :

Correct answer: C. 5

  • A. 7
  • B. 6
  • C. 5
  • D. 4

Explanation

Hexane (C6H14) has five possible isomers. The isomers are as follows;- Hexane, CH3CH2CH2CH2CH2CH3, a six carbon containing, saturated straight chain alkane. - 2-Methylpentane (Isohexane), CH3CH(CH3)CH2CH2CH3, which is a five carbon containing chain with one methyl branch on the carbon number 2.- 3-Methylpentane, CH3CH2CH(CH2)CH2CH3, is also a five-carbon chain, however the methyl group is attached on Carbon number 3.- 2,3-Dimethylbutane, CH3CH(CH3)CH(CH3)CH3, is a four-carbon -containing chain with a methyl group on carbon number 2 and 3.- 2,2-Dimethylbutane (neohexane), CH3C(CH3)2CH2CH3, is a four-carbon chain with two methyl groups attached on carbon number two.

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About Isomerism

Isomerism occurs when compounds have the same molecular formula but different atom arrangements or spatial orientations. The content includes chain, position, functional, metameric and tautomeric isomerism, along with geometrical and optical isomerism, including cis-trans forms, E/Z notation, chirality and enantiomers.

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