Classisfy the following acyclic aliphatic hydrocarbons as saturated or unsaturated?Thanks so much.?

Question

a)C5H10 b) C5H12 c) C6H10 d) C6H12 e) C6H14
f) C7H14

Answer 1

Hydrocarbons that fit the formula CnH(2n+2) are saturated. Fewer hydrogens than that means at least one unsaturation.

Unsaturated - a) C5H10, c) C6H10, d)C6H12, f)C7H14
Saturated - b) C5H12, e) C6H14

Answer 2

I love this question! Since they are acyclic the formula for a full saturation of hydrogens on the carbons should be: 2 hydrogens + twice as much hydrogens per carbon. Thus, the acyclic aliphatic hydrocarbons as saturated are B and E. The acyclic aliphatic hydrocarbons as unsaturated are A, C, D and F. By the way, B and E are alkanes. These are alkenes: A, D and F have only one double bond. C is a pentyne because it has a triple bond (if you are an alkene or an alkyne then you are unsaturated). Draw them out and you'll see it too! Best of luck!