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Multiple Choice
What is the correct IUPAC name for the compound with the molecular formula ?
A
Butane
B
Methane
C
Propane
D
Pentane
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1
Identify the molecular formula given: \(C_4H_{10}\). This formula corresponds to an alkane because it follows the general formula for alkanes, which is \(C_nH_{2n+2}\).
Determine the value of \(n\) in the formula \(C_nH_{2n+2}\). Here, \(n=4\), so the alkane has 4 carbon atoms.
Recall the IUPAC naming convention for alkanes: the prefix indicates the number of carbon atoms, and the suffix '-ane' indicates it is an alkane (a saturated hydrocarbon).
Match the number of carbon atoms to the correct prefix: 1 = Meth-, 2 = Eth-, 3 = Prop-, 4 = But-, 5 = Pent-, etc.
Combine the prefix for 4 carbons with the suffix '-ane' to get the correct IUPAC name: 'Butane'.