Question

question 8 (1 point)
which of these is an unsaturated hydrocarbon?
○ a) c₄h₁₀
○ b) c₅h₁₀
○ c) c₃h₈
○ d) c₆h₁₄
○ e) none of the above

Explanation:

Unsaturated hydrocarbons have double or triple bonds. The general formula for alkanes (saturated) is \(C_nH_{2n + 2}\). For alkenes (unsaturated with one double bond), it is \(C_nH_{2n}\).

• For \(C_4H_{10}\): Using \(2n+2\) (where \(n = 4\)), \(2\times4 + 2=10\), so it is an alkane (saturated).
• For \(C_5H_{10}\): Using \(2n\) (where \(n = 5\)), \(2\times5=10\), so it is an alkene (unsaturated).
• For \(C_3H_8\): Using \(2n + 2\) (where \(n = 3\)), \(2\times3+2 = 8\), so it is an alkane (saturated).
• For \(C_6H_{14}\): Using \(2n+2\) (where \(n = 6\)), \(2\times6+2=14\), so it is an alkane (saturated).

Answer:

B. \(C_5H_{10}\)