How would you draw constitutional isomers for the molecular formula C4H8?

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Answer 1 · 2015-12-04T00:41:09

There are five constitutional isomers with the formula #"C"_4"H"_8#.

An alkane with 4 carbon atoms would have the formula #"C"_4"H"_10#.

This hydrocarbon has two hydrogens less, so it must contain either a double bond or a ring.

The possibilities are:

But-1-ene

#"CH"_3"CH"_2"CH=CH"_2#

But-2-ene

#"CH"_3"CH=CHCH"_3#

2-Methylpropene

Cyclobutane

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Methylcyclopropane

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