Question:

The number of different chain isomers for C7H16 \text{C}_7\text{H}_{16} is ______.

Updated On: Nov 25, 2024
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Correct Answer: 9

Solution and Explanation

For a hydrocarbon with the molecular formula C7H16 C_7H_{16} , which is an alkane, we can determine the possible chain isomers by drawing all unique structures with the same molecular formula.

The chain isomers for C7H16 C_7H_{16} are as follows:

Straight Chain (Heptane):

CH3CH2CH2CH2CH2CH2CH3 \text{CH}_3 - \text{CH}_2 - \text{CH}_2 - \text{CH}_2 - \text{CH}_2 - \text{CH}_2 - \text{CH}_3

Branched Chains (Various Isomers):

  • 2-Methylhexane
  • 3-Methylhexane
  • 2,2-Dimethylpentane
  • 2,3-Dimethylpentane
  • 2,4-Dimethylpentane
  • 3,3-Dimethylpentane
  • 3-Ethylpentane
  • 2,2,3-Trimethylbutane

Each of these structures represents a distinct arrangement of carbon atoms, satisfying the molecular formula C7H16 C_7H_{16} .

Conclusion:

There are a total of 9 different chain isomers for C7H16 C_7H_{16} .

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