What is homologous series alkane alkene alkyne?
Such organic compounds that vary from one another by a repeating unit and have the same general formula form a series of compounds. Alkanes with general formula CnH2n+2, alkenes with general formula CnH2n and alkynes with general formula CnH2n-2 form the most basic homologous series in organic chemistry.
How do you classify alkanes alkenes and alkynes?
The alkanes are saturated hydrocarbons—that is, hydrocarbons that contain only single bonds. Alkenes contain one or more carbon-carbon double bonds. Alkynes contain one or more carbon-carbon triple bonds.
What is the homologous series of alkanes?
The general formula for the homologous series of alkanes is CnH2n+2 where n is the number of carbon atoms. All alkanes end in, “ane”….Alkane Homologous Series.
|Number of Carbon atoms||4|
|Molecular Formula CnH2n+2||C4H2(4)+2 = C4H10|
|Boiling Point °C||−0.5|
|Melting Point °C||−135|
What are the physical properties of alkanes alkenes and alkynes?
Alkynes are nonpolar, unsaturated hydrocarbons with physical properties similar to alkanes and alkenes. Alkynes dissolve in organic solvents, have slight solubility in polar solvents, and are insoluble in water. Compared to alkanes and alkenes, alkynes have slightly higher boiling points.
What is alkynes homologous series?
Answer: homologous series is a series of compounds with the same functional group and similar chemical properties in which the members of the series can be branched or unbranched. The alkynes comprise a series of carbon‐ and hydrogen‐based compounds that contain at least one triple bond.
Which belong to homologous series of alkynes?
Answer – C3H4 belongs to homologous series of alkyne. Homologous series is the series comprising of compounds that share same chemical properties and functional groups. Alkynes have formula C(2)H(2n-2).
What is homologous series explain with an example?
A homologous series is a series of carbon compounds that have different numbers of carbon atoms but contain the same functional group. For example, methane, ethane, propane, butane, etc. are all part of the alkane homologous series. The general formula of this series is CnH2n+2. Methane – CH4.
What are the role of alkenes and alkynes in industry and in our daily life?
They are mostly used for heating, cooking, and electricity generation. The alkanes which have a higher number of carbon atoms are used for surfacing roads. Alkenes or unsaturated hydrocarbons are formed by double or triple bonding between carbon atoms. They are used for manufacturing of plastic or plastic products.
What are the significant characteristics of alkenes and alkanes?
Alkenes are weakly polar just like alkanes but are slightly more reactive than alkanes due to the presence of double bonds. The π electrons which make up the double bonds can easily be removed or added as they are weakly held. Hence, the dipole moments exhibited by alkenes are more than alkanes.
What are homologous series of alkenes?
Alkene Homologous Series A hydrocarbon homologous series is a series of hydrocarbons which: Have the same general formula. Differ by CH2 in molecular formulae from neighbouring compounds. Show a gradual variation in physical properties i.e. boiling and melting point. Have similar chemical properties.
Why do alkenes form a homologous series?
The general formula for the homologous series of alkenes is CnH2n where n is the number of carbon atoms. Because alkenes are hydrocarbons with at least one carbon-carbon double bond the alkene homologous series starts at ethene C2H4.