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Multiple Choice
Which of the following accurately describes the structure of alkanes?
A
Alkanes are hydrocarbons with triple bonds between carbon atoms.
B
Alkanes are hydrocarbons with only single bonds between carbon atoms.
C
Alkanes contain at least one double bond between carbon atoms.
D
Alkanes are aromatic compounds with alternating double and single bonds.
Verified step by step guidance
1
Begin by understanding the basic definition of alkanes. Alkanes are a class of hydrocarbons, which means they are composed entirely of carbon (C) and hydrogen (H) atoms.
Recognize the bonding characteristics of alkanes. Alkanes are characterized by having only single bonds between carbon atoms. This is a key feature that distinguishes them from other types of hydrocarbons.
Consider the structural formula of alkanes. The general formula for alkanes is CnH2n+2, where 'n' is the number of carbon atoms. This formula reflects the saturation of hydrogen atoms in alkanes due to the presence of single bonds.
Differentiate alkanes from other hydrocarbons such as alkenes and alkynes. Alkenes contain at least one double bond between carbon atoms, while alkynes contain at least one triple bond. Alkanes, however, do not have these multiple bonds.
Clarify the misconception about aromatic compounds. Aromatic compounds, like benzene, have alternating double and single bonds and are not classified as alkanes. Alkanes are non-aromatic and consist solely of single bonds.