Benzene is an aromatic hydrocarbon that is commercially isolated from coal tar. It can also be prepared by cyclic polymerization of ethyne.
Chemistry PPTs for Tutors Preparation and Properties of Alkynes Alkynes are unsaturated hydrocarbons containing carbon-carbon triple bond (C≡C). The general formula of alkenes is CnH2n-2. The first member of alkynes is acetylene or ethyne (C2H2). Preparation Methods of Alkynes (1)From Calcium carbide On the industrial scale, ethyne is prepared by…
Alkenes are unsaturated hydrocarbons containing carbon-carbon double bond (C=C). The general formula of alkenes is CnH2n. The first member of alkenes i.e. ethylene or ethene (C2H4) reacts with chlorine to form an oily liquid. Hence, alkenes are also called olefins (olefient = oil forming).
Alkanes are the simplest saturated hydrocarbons consisting of only carbon and hydrogen. The general formula of alkanes is CnH2n+2.