Ahydrocarbon 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. the choices are:

a) c5h10
b) c5h12
c) c5h9

The correct answer is option B, that is, C5H12.

Explanation:

The two isomeric forms of pentane are iso-pentane and n-pentane. The isomeric form of n-pentane is iso-pentane. The isomers exhibit similar molecular formula, however, differ in the atomic arrangement projected in the three-dimensional and the alignment of atoms mainly leading to the formation of a distinct set of characteristics. In this situation, iso-pentane also exhibits a molecular formula of an alkane C5H12.

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