Cycloalkanes and Their Properties

The video discusses the stability of cycloalkanes, focusing on cyclopropane, cyclobutane, cyclopentane, and cyclohexane. Cyclohexane is the most stable due to minimal ring strain, while cyclopropane is the least stable. The video explains how angle strain affects stability and how cyclopropane can undergo addition reactions to become more stable. The ideal bond angles for different cycloalkanes are calculated, highlighting why cyclohexane is stable in a chair conformation.

Which cycloalkane is the most stable?

• Cyclopentane

• Cyclohexane

• Cyclobutane

• Cyclopropane

What is the least stable cycloalkane?

• Cyclopropane

• Cyclohexane

• Cyclobutane

• Cyclopentane

Which cycloalkane has the highest heat of combustion per CH2 group?

• Cyclopropane

• Cyclobutane

• Cyclopentane

• Cyclohexane

Why can cyclopropane undergo addition reactions with hydrogen gas?

• It is a straight chain alkane

• It has high ring strain

• It is highly stable

• It has low energy

What is the molecular formula of propane formed from cyclopropane?

• C4H8

• C3H6

• C3H8

• C4H10

What is the ideal bond angle for an sp3 carbon?

• 108 degrees

• 90 degrees

• 60 degrees

• 109.5 degrees

What is the interior angle of a cyclopropane ring?

• 108 degrees

• 90 degrees

• 120 degrees

• 60 degrees

What is the interior angle of a cyclohexane ring in its chair conformation?

• 120 degrees

• 90 degrees

• 109.5 degrees

• 60 degrees

Which cycloalkane has an interior angle closest to the ideal sp3 angle?

• Cyclopropane

• Cyclohexane

• Cyclopentane

• Cyclobutane

Which cycloalkane is least likely to undergo addition reactions due to ring strain?

• Cyclopropane

• Cyclobutane

• Cyclopentane

• Cyclohexane