Multiple Choice
Which of the following is the correct IUPAC name for the compound with the molecular formula ?
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- 1. A Review of General Chemistry5h 6m
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4. Alkanes and Cycloalkanes
IUPAC Naming
Multiple Choice
What is the IUPAC name for the alkane with the molecular formula ?
A
Butane
B
Propane
C
Hexane
D
Pentane
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Verified step by step guidance1
Identify the molecular formula given: \(C_5H_{12}\). This formula corresponds to an alkane because it follows the general formula for alkanes, which is \(C_nH_{2n+2}\).
Determine the number of carbon atoms in the molecule, which is 5 in this case.
Recall the IUPAC naming convention for straight-chain alkanes: the prefix indicates the number of carbon atoms, and the suffix '-ane' indicates an alkane (a saturated hydrocarbon).
Match the number of carbons to the correct prefix: 1 = meth-, 2 = eth-, 3 = prop-, 4 = but-, 5 = pent-, 6 = hex-, etc.
Combine the prefix for 5 carbons ('pent-') with the suffix '-ane' to get the IUPAC name: 'pentane'.
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