Chapter 20, Problem 62A

Interpretation Introduction

Interpretation: General formula for a normal alkane and the difference between two successive members of alkane series is to be given.

Concept introduction: Alkanes are hydrocarbons that consist of single bonds between its constituting atoms.

Answer to Problem 62A

General formula of alkane is $C_n{H}_{2n+2}$ where $n$ is the number of carbon atoms. A given alkane differs from the previous or the following member of the series by $C{H}_2$ unit.

Explanation of Solution

When $n$ =1, alkane is $C{H}_4$

When $n=2,\text{ alkane is }{C}_2{H}_6$ and

When $n=3,\text{ alkane is }{C}_3{H}_8$ .

The middle alkane differs from the previous alkane, and the following alkane, by unit.

Conclusion

General formula of alkane is $C_n{H}_{2n+2}$ where $n$ the number of carbon atoms is. A given alkane differs from the previous or the following member of the series by $C{H}_2$ unit.