Chapter 23, Problem 4PS

Interpretation Introduction

Interpretation: The reason for the unstability of ethene molecule in comparison to ethane has to be stated.

Concept introduction:

Alkanes: Alkanes are the hydrocarbons in which all the carbons are ${\text{sp}}^{\text{3}}$ hybridized and have maximum number of hydrogen atoms. The general formula used to write the molecular formula of an alkane is ${\text{C}}_n{\text{H}}_{2n+2}$.

Here, $n$ is the number of carbon atoms and then $2n+2$ will be the number of hydrogen atoms. These aliphahtic hydrocarbons have maximum hydrogen content also known as saturated hydrocarbons.

Alkenes: Alkenes are the hydrocarbons in which at least one carbon-carbon double bond is present which make them unsaturated hydrocarbons. The general formula used to write the molecular formula of an alkene is ${\text{C}}_n{\text{H}}_{2n}$.

Here, $n$ is the number of carbon atoms and then $2n$ will be the number of hydrogen atoms. These aliphahtic hydrocarbons have less hydrogen content as compared to alkanes and also known as unsaturated hydrocarbons.