A hydrocarbon of pentane has two isomeric forms—n-pentane and iso-pentane. The molecular formula of the n-pentane is C5H12. Predict the molecular formula of the iso-pentane.

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16-06-2017
Biology

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A hydrocarbon of pentane has two isomeric forms—n-pentane and iso-pentane. The molecular formula of the n-pentane is C5H12. Predict the molecular formula of the iso-pentane.

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dec77cat dec77cat · Answer 1 · 2017-06-16T16:45:38+02:00

A hydrocarbon of pentane has three isomeric forms:

CH₃-CH₂-CH₂-CH₂-CH₃ n-pentane (normal pentane) (C₅H₁₂)

CH₃-CH-CH₂-CH₃ iso-pentane (C₅H₁₂)
   I
   CH₃

   CH₃
   I
CH₃-C-CH₃ neo-pentane (C₅H₁₂)
   I
   CH₃

Isomers have the same qualitative and quantitative composition, but different structure.