Which of the following statements is not true?
A) The carbon-carbon single bond of an alkane is weaker than the carbon-carbon triple bond of an alkyne.
B) The carbon-carbon triple bond of an alkyne is shorter than the carbon-carbon double bond of an alkene.
C) The carbon-carbon triple bond of an alkyne is exactly three times as strong as a carbon-carbon single bond of an alkane.
D) The carbon-carbon single bond of an alkane is longer than the carbon-carbon triple bond of an alkyne.

Question

Quizplus · Accepted Answer

The carbon-carbon triple bond of an alkyne is not exactly three times as strong as a carbon-carbon single bond of an alkane. The actual energy required to break these bonds depends on the specific molecules involved and the conditions under which the reaction occurs. However, it is generally true that the carbon-carbon triple bond is stronger than the carbon-carbon double bond, which in turn is stronger than the carbon-carbon single bond. Therefore, statements A, B, and D are all true.

Which of the Following Statements Is Not True