Advertisements
Advertisements
Questions
What is meant by homologous series of carbon compounds?
What are homologous series of carbon compounds?
Advertisements
Solution
Organic compounds that have similar general formulas belong to a series called the homologous series. The chemical properties of the organic compounds in the homologous series are the same because of the presence of the same functional group.
Alkanes, alkenes, alkynes, etc. form such series in which their respective members differ in mass by 14 atomic mass units. Each member in the series differs from the previous one by a CH2 group.
APPEARS IN
RELATED QUESTIONS
What is a homologous series?
Fill in the following blank with suitable word:
Ethene and ethyne are examples of ..... hydrocarbons.
What is the next higher homologue of methanol (CH3OH)?
The molecular formula of the third member of the homologous series of ketones is:
(a) C4H8O
(b) C3H6O
(c) C5H10O
(d) C6H12O
Write the name and molecular formula of the first member of the homologous series of alkynes.
Why homologous series of carbon compounds are so called? Write chemical formula of two consecutive members of a homologous series and state the part of these compounds that determines their (i) physical properties, and (ii) chemical properties.
Copy and complete the following table, which relates to the three homologous series of hydrocarbons:
| General formula | CnH2n | CnH2n-2 | CnH2n+2 |
| IUPAC name of the homologus series | |||
| Characteristic bond type | Single bonds | ||
| IUPAC name of the first member of the series | |||
| Type of reaction with chlorine | Addition |
The general formula of Alkane is _________________
Write a short note.
Homologous series
Study and complete the following table:
| Homologous series | Alkane | Alkyne |
| General formula | CnH2n+2 | 1. ______ |
| IUPAC name | 2. ______ | Ethyne |
| Common name | Marsh gas | 3. ______ |
