Quiz - Alkanes - 3 | Alkanes

Organic Chemistry 1 - Quiz - Alkanes - 3


Which of the following IUPAC names is correct for the alkane with the chemical formula C4H10?

The correct IUPAC name for the alkane with the chemical formula C4H10 is Butane. Alkanes have single bonds and the '-ane' suffix.


In the chemical equivalence of alkanes, how many sets of equivalent hydrogens are present in isobutane (2-methylpropane)?

Isobutane has two sets of equivalent hydrogens: nine hydrogens on the methyl groups and one on the tertiary carbon.


What term best describes an alkane with all carbons connected in a straight chain, without branching?

An alkane with all carbons connected in a straight chain is known as an N-alkane, indicating a normal structure without branching.


Upon radical halogenation of an alkane, which type of carbon will most likely form a radical intermediate?

Tertiary carbons most likely form radical intermediates due to their greater stability compared to primary or secondary carbon radicals.


What is the main product of the monochlorination of 2-methylpropane at room temperature?

2-chloro-2-methylpropane is the main product due to the higher reactivity of tertiary hydrogens in radical halogenation reactions.


In the presence of UV light, which of the following alkanes will react most rapidly with chlorine gas?

2,3-dimethylbutane will react most rapidly because it has more tertiary hydrogens which are the most reactive in the presence of chlorine gas and UV light.


Which of the following correctly describes the bond angles in a 3D structure of methane?

Methane has a tetrahedral 3D structure with bond angles of approximately 109.5 degrees.


Which statement accurately characterizes the boiling points of alkanes?

Straight-chain alkanes have higher boiling points than their branched isomers because of greater surface area, leading to stronger van der Waals forces.


Which type of alkane will have the highest number of isomers?

Alkanes with seven carbon atoms will have the highest number of isomers due to the greater possibility of chain branching.


In the presence of a halogen and UV light, what type of reaction can alkanes undergo?

Alkanes can undergo halogenation, a substitution reaction where one or more hydrogen atoms are replaced by halogen atoms, in the presence of a halogen (e.g., Cl2 or Br2) and UV light.