Pentane is an organic compound with the
formula C5H12, which is an alkane with five
carbon atoms. There are three isomers of
pentane, which are molecules with the
same chemical formula but different
structural arrangements of atoms. The
three isomers of pentane are:
1. n-pentane: This is the straight-chain
isomer of pentane, where the carbon
atoms are arranged in a linear chain
Its structural formula is CH3(CH2)3CH3
2. isopentane: This is the branched-
chain isomer of pentane, where the
carbon atoms are arranged in a
branched chain. Its structural formula
is CH3CH(CH3)CH2CH3
3. neopentane: This is the highly
branched isomer of pentane, where
the carbon atoms are arranged in a
tetrahedral shape around a central
carbon atom. Its structural formula is
(CH3)4C
In summary, the three different substances
with the formula C5H12 are n-pentane
isopentane, and neopentane.