Examples of Homologous series. (ii) All the members of the series can be prepared by the same general methods. 7 min. Class 11 Chemistry Organic Chemistry : Functional groups & Homologous Series: Functional groups . Characteristics of a Homologous series . Members have common general method of … Homologous series helps in determination of structure of the successive member of the series and the property of that members can also be predicted by their series. The members of the homologous series can be represented by a general formula. Learn with Videos. Four Characteristics of Homologous series. Answer . Properties of Homologous Series . Characteristics of a homologous series -OH group.
For Ex:The functional group of alcohols is the hydroxyl group i.e. The general characteristics of a homologous series are: (i) All compounds in the series are composed of the same elements and contain the same functional group . Video Explanation. The functional group of aldehyde is aldehydic group i.e.
Homologous series is the characteristic feature of carbon compounds in which carbon and hydrogen atoms in hydrocarbons varying by single parameter. That’s why their chemical properties are almost similar.
Members have the same general formula. For example, methane, ethane, and propane are part of a homologous series.
The series in which the molecular formula of adjacent members differ by a – CH 2 unit, is called homologous series and the individual members are called homologous. 20,000+ Learning videos. A homologous series is a series of carbon compounds that have different numbers of carbon atoms but contain the same functional group. With one methodology all the compound of the series can be prepared.
Homologous Series - definition A Homologous Series is a group of organic chemical compounds, usually listed in order of increasing size, that have a similar structure (and hence, also similar properties) and whose structures differ only by the number of C H 2 units in the main carbon chain. ; All the compounds of the series have same chemical properties and physical properties with a gradual variation.
They are atom or group of atoms, that determine the characteristic properties of organic compound. For example, methane, ethane, propane, butane, etc. The successive members vary from each other by a CH 2 unit.
Four Characteristics of Homologous series. All the homologues contain same functional group. October 15, 2019 Dasharath Tare. For example, methane, ethane, and propane are part of a homologous series. The homologous series has compound with the same general formula and functional group. A homologous series in organic chemistry is a group of organic compounds [compounds that contain carbon (C) atoms] that diverge from each other by one methylene (CH 2) group.
Download PDF for free . Homologous series is defined as a systematic order of organic compounds having same functional group that can be represented by same general formula and prepared by same method.
; The preparation method of the compounds present in the series remains the same.
(iv) Members of homologous series have similar chemical properties. 2) All the members of a given homologous series possess the same functional group. (ii) All compounds in the series can be represented by one general formula, e.g., the homologous series of monohydric alcohols can be represented by the general formula C n H 2n+1 OH. 2.
The general characteristics of this series are : 1. Characteristics are : The members of the homologous series have same functional group. ; All the compounds of the series have same chemical properties and physical properties with a gradual variation.
e.g., The homologous series of alkene group is. Write any 4 characteristic features of homologous series of organic compounds?
With one methodology all the compound of the series can be prepared.
Members have the almost same chemical properties due to same functional group. Characteristics of a homologous series are all part of the alkane homologous series.
1) All the members of a homologous series contain same general formula and have similar structures, 2) Two successive members of a series are different in their molecular formula by a -CH 2 unit or 14 atomic mass (a.m.u).. 3) Due to the presence of the same functional group, all the members of a homologous series are almost similar in chemical properties. Characteristics of a homologous series. Alkene C = C; Alkynes C = C; Arenes ; Homologous series. -CHO group. So CH 4, C 2 H 6, and C 3 H 8 are homologs.