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Multiple Choice
Which of the following formulas represents an alkane?
A
B
C
D
Verified step by step guidance
1
Recall the general formula for alkanes, which are saturated hydrocarbons containing only single bonds. The formula is given by \(C_nH_{2n+2}\).
Analyze each given formula and compare it to the alkane formula: \(C_nH_{2n+1}\), \(C_nH_{2n+2}\), \(C_nH_{2n}\), and \(C_nH_{2n-2}\).
Understand that the formula \(C_nH_{2n+1}\) corresponds to an alkyl group (a fragment of an alkane missing one hydrogen), not a full alkane molecule.
Recognize that \(C_nH_{2n}\) typically represents alkenes (hydrocarbons with one double bond), and \(C_nH_{2n-2}\) corresponds to alkynes (hydrocarbons with one triple bond).
Conclude that the formula matching the alkane general formula \(C_nH_{2n+2}\) is the correct representation of an alkane.