Alkynes

Bromine water test is a technique used for the identification of alkynes. Alkynes on coming in contact with bromine turn them colourless from reddish brown color. This happens because of the addition reaction which takes place due to the triple carbon bonds of alkynes.

Tautomerism is a dynamic equilibrium between 2 isomers, also known as tautomers, where a compound exists in 2 different structures. The most common form is keto enol tautomerism. It is mainly of two types:

• Keto Form: Contains a C=O (carbonyl) group
• Enol Form: Contains a C=C double bond and an –OH group

Terminal alkynes and Non Terminal Alkynes are both variants of alkynes, but the difference lies in the position of the triple carbon bond. Terminal Alkynes have the triple carbon bond at the end of the chain, such as ethyne and propyne. On the other hand, Non Terminal Alkynes have their triple carbon bond in the middle of the chain. Example: 2-Butyene.