Chapter 21.3, Problem 19SSC

Interpretation Introduction

Interpretation:

The difference in molecular structures of alkenes and alkynes from the structure of alkanes needs to be explained.

Concept introduction:

The hydrocarbon compounds contain compound that are made up of only hydrogen and carbon atoms.

Explanation of Solution

The hydrocarbon compounds that contains single bond(s) between carbon atom(s) are said to be saturated hydrocarbon whereas hydrocarbon compounds that contains multiple bond(s) between carbon atom(s) are said to be unsaturated hydrocarbon. Compounds containing single bonds are said to be alkane and compounds containing double bonds are said to be alkene whereas compounds containing triple bonds are said to be alkyne.

For example:

Since, the compound contains only single bonds so, it is an alkane (saturated hydrocarbon).

Since, the compound contains double bond between two carbon atoms so, it is an alkene (unsaturated hydrocarbon).

Since, the compound contains triple bond between two carbon atoms so, it is an alkyne (unsaturated hydrocarbon).