What are the characteristics of homologous series?

Question

Answer

There is the difference of CH2 after every successive members.

Answer

Answer

CH 2

Answer

Homologous series is a way to define the physical and chemical properties of different carbon compounds.
Its characteristics are :-
- it become easy to define the physical and chemical properties of different compounds in same block.
- there is a difference of 14u atomic mass between two compounds.

I hope it's helpful for us.....

Answer

Difference of CH2.

Answer

Characteristics of HS are- 1. All the adjacent members have a difference of CH2 and 14 amu 2. HS contain hydrocarbons having similar chemical properties. 3. All the members of HS have same general formula. 4. All the members of HS have same functional group.

Answer

Covalency

Answer

Homologous Series

A homologous series refers to a group of organic compounds that possess similar chemical properties and show a gradual change in their physical properties as their molecular structures vary. This series is characterized by the presence of the same functional group and exhibits a regular increase in molecular weight by a constant increment of the same type of atoms or groups.

**Characteristics of Homologous Series:**

1. **Same Functional Group:** All compounds in a homologous series possess the same functional group, which is responsible for their chemical behavior and reactions. For example, the functional group in alcohols is -OH, while in aldehydes it is -CHO.

2. **Gradual Change in Physical Properties:** Homologous series exhibit a regular and gradual change in their physical properties as the number of carbon atoms in the compound increases. For instance, as the number of carbon atoms increases in the alkane series, the boiling point, melting point, and viscosity of the compounds also increase.

3. **Same General Formula:** Each member of a homologous series can be represented by a general formula. The general formula represents the number and types of atoms present in the compound. For example, the general formula for alkanes is CnH2n+2, where 'n' represents the number of carbon atoms.

4. **Similar Chemical Reactivity:** Compounds within a homologous series exhibit similar chemical reactivity due to the presence of the same functional group. They undergo similar types of reactions and have similar reaction mechanisms.

5. **Isomerism:** Isomerism is frequently observed in homologous series. Isomers are compounds with the same molecular formula but different structural arrangements. For instance, in the alkene series, cis-trans isomerism can occur due to the presence of a double bond.

6. **Gradual Increase in Molecular Weight:** The molecular weight of the compounds in a homologous series increases gradually as the number of carbon atoms increases. This results in a corresponding increase in physical properties such as boiling point, melting point, and density.

7. **Similar Chemical Methods of Preparation:** Compounds within a homologous series can be prepared using similar chemical methods. For example, alcohols can be prepared by the hydration of alkenes or reduction of aldehydes and ketones.

In conclusion, a homologous series is characterized by compounds with the same functional group, exhibiting a regular increase in molecular weight and gradual changes in physical properties. They have similar chemical reactivity, isomerism, and can be prepared using similar chemical methods.

Answer

Difference between two hydrocarbon by CH2 and 14 unit

Similar Class 10 Doubts

What are homologous series? What is the general formula for alkanes? Give the names and molecular formula of the first three members of the homologous series of alkanes.?

What is the Characteristics of homologous series?

Hey!!In NCERT book it is given that"series of compounds in which the same functional grp substitutes hydrogen in a carbon chain is called a homologous series" so are hydrocarbons part of this series?

why is homologous series of carbon compounds are so called? wow the chemical formula two consecutive members of homologous series and state the part of these compounds that determine their physical and chemical properties Related: NCERT Exemplar - Carbon and its Compounds?

What is an homologous series?

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