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Multiple Choice
What is the IUPAC name for the following alkane: ?
A
Pentane
B
Propane
C
Hexane
D
Butane
Verified step by step guidance
1
Identify the molecular formula given: \(C_5H_{12}\). This indicates the compound is an alkane with 5 carbon atoms and 12 hydrogen atoms.
Recall that alkanes follow the general formula \(C_nH_{2n+2}\). For \(n=5\), the formula is \(C_5H_{12}\), confirming it is a saturated hydrocarbon with no double or triple bonds.
Determine the longest continuous carbon chain in the molecule. Since there are 5 carbons, the longest chain is pentane.
Use the IUPAC nomenclature for alkanes, where the prefix indicates the number of carbons: 'meth-' for 1, 'eth-' for 2, 'prop-' for 3, 'but-' for 4, and 'pent-' for 5.
Combine the prefix with the suffix '-ane' to indicate an alkane, resulting in the name 'pentane' for \(C_5H_{12}\).