Define homologous series of carbon compounds. Mention any two characte

1.	Define homologous series of carbon compounds. Mention any two characteristics of homologous series.
Answer» 1. The series of carbon compounds in which two successive compounds differ by – CH₂ unit is called homologous series. Ex : 1) CH₄, C₂ H₆, C₃ H₈, ……………….. 2) CH₃OH, C₂H₅OH, C₃H₇OH, ……………….. 2. If we observe above series of compounds, we will notice that each compound in the series differs by – CH₂ unit by its successive compound. 3. Characteristics of homologous series : i) They have one general formula. Ex : alkanes (C_nH_2n+2), alkynes (C_nH_2n-2), alcohols (C_n H_2n+1) OH, etc. ii) Successive compounds in the series possess a difference of (CH₂) unit. iii) They have similar chemical properties.

Define homologous series of carbon compounds. Mention any two characteristics of homologous series.

Answer»

1. The series of carbon compounds in which two successive compounds differ by – CH₂ unit is called homologous series.

Ex : 1) CH₄, C₂ H₆, C₃ H₈, ………………..

2) CH₃OH, C₂H₅OH, C₃H₇OH, ………………..

2. If we observe above series of compounds, we will notice that each compound in the series differs by – CH₂ unit by its successive compound.

3. Characteristics of homologous series :

i) They have one general formula.

Ex : alkanes (C_nH_2n+2), alkynes (C_nH_2n-2), alcohols (C_n H_2n+1) OH, etc.

ii) Successive compounds in the series possess a difference of (CH₂) unit.

iii) They have similar chemical properties.