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Multiple Choice
Which of the following formulas represents an unsaturated hydrocarbon?
A
B
C
D
Verified step by step guidance
1
Understand that an unsaturated hydrocarbon contains at least one double or triple bond between carbon atoms, which reduces the number of hydrogen atoms compared to a saturated hydrocarbon with the same number of carbons.
Recall the general formula for saturated hydrocarbons (alkanes) is \(C_nH_{2n+2}\), for alkenes (one double bond) is \(C_nH_{2n}\), and for alkynes (one triple bond) is \(C_nH_{2n-2}\).
Compare each given formula to these general formulas to determine if it fits the pattern of an unsaturated hydrocarbon:
- \(C_2H_4\) fits \(C_nH_{2n}\), indicating an alkene (unsaturated).
- \(C_4H_{10}\) fits \(C_nH_{2n+2}\), indicating an alkane (saturated).
- \(C_2H_6\) fits \(C_nH_{2n+2}\), indicating an alkane (saturated).
- \(C_3H_8\) fits \(C_nH_{2n+2}\), indicating an alkane (saturated).