Chapter 20, Problem 3ALQ

Interpretation Introduction

Interpretation:

The product which is formed by the dehydrogenation of propane should be determined along with its name and structural formula.

Concept Introduction:

The chemical reaction which involves the removal of hydrogen atom from an organic molecule is known as dehydrogenation. This reaction is a reverse of hydrogenation. In this reaction, alkanes are converted into olefins which are more reactive than alkanes.

Rules for naming alkenes or olefins are:

1. First choose the longest continuous chain of carbon atoms having double bond known as parent chain.
2. The numbering of parent chain should be done in a way that the double bond and substituents get the lowest number.
3. The root name of the carbon chain is same as in case of alkanes, but “−ane” ending is replaced by “−ene”.
4. The appropriate name should be given to every alkyl group and denote its position on the parent chain with the number.
5. The alkyl groups are written in alphabetical order.