Constitutional Isomers with Practice Problems - Chemistry Steps - Free Printable

The task is to identify which of the given chemical structures are constitutional isomers of each other.

Constitutional isomers (also known as structural isomers) are compounds that have the same molecular formula but different connectivity of atoms.

Let's analyze each structure:

a) HO-CH₂-CH₃: This is ethanol. Its molecular formula is C₂H₆O.
b) CH₃-CH(OH)-CH₃: This is propan-2-ol. Its molecular formula is C₃H₈O.
c) CH₃-CH₂-O-CH₂-CH₃: This is diethyl ether. Its molecular formula is C₄H₁₀O.
d) CH₃-CH₂-O-CH₃: This is ethyl methyl ether. Its molecular formula is C₃H₈O.
e) CH₃-CH₂-CH₂-OH: This is propan-1-ol. Its molecular formula is C₃H₈O.
f) CH₃-CH₂-CH₂-OH: This is the same as (e), propan-1-ol. Its molecular formula is C₃H₈O.

Now, let's group them by molecular formula:

- C₂H₆O: Only compound (a).
- C₃H₈O: Compounds (b), (d), and (e). These are constitutional isomers of each other.
- C₄H₁₀O: Only compound (c).

Therefore, the only set of constitutional isomers among the given options are (b), (d), and (e).

- b) and d)
- b) and e)
- d) and e)