Chapter 20, Problem 40A

Interpretation Introduction

Interpretation:

The functional group of alcohol is to be discussed.

Concept introduction:

Alcohol is a class of organic compounds containing a functional group.

Answer to Problem 40A

Alcohol is characterized by $-\mathrm{O}\mathrm{H}$

For an alcohol molecule, ‘ol’ is added to the name of the parent hydrocarbon.

Explanation of Solution

An organic molecule of the general formula $\mathrm{R}-\mathrm{O}\mathrm{H}$ is alcohol.

For example, methanol, ethanol, propanol.

They are named by adding ‘ol’ at the end in the name of the parent hydrocarbon chain and ‘e’ of an alkane is removed.

Conclusion

Alcohol is a class of hydrocarbon containing a functional group $-\mathrm{O}\mathrm{H}$ . Ethanol is used for drinking purposes.