Advertisements
Advertisements
प्रश्न
Study and complete the following table:
| Homologous series | Alkane | Alkyne |
| General formula | CnH2n+2 | 1. ______ |
| IUPAC name | 2. ______ | Ethyne |
| Common name | Marsh gas | 3. ______ |
Advertisements
उत्तर
| Homologous series | Alkane | Alkyne |
| General formula | CnH2n+2 | 1. CnH2n−2 |
| IUPAC name | 2. Methane | Ethyne |
| Common name | Marsh gas | 3. Acetylene |
Explanation:
1. The general formula of the alkyne is CnH2n−2· Due to the presence of triple bond four hydrogens are removed from the molecular formula of alkane. For example, in the case of ethyne, the two carbons have already formed triple bonds therefore they only need one more bond in order to complete their octet.
2. The IUPAC name of the first member of the alkane family is methane. Also, the common name given in the table is Marsh gas which is the common name of methane gas.
3. The common name of ethyne is acetylene as it contains the acetyl group. This name was coined by a French chemist (Marcelin-Pierre-Eugene Berthelot) in 1864.
APPEARS IN
संबंधित प्रश्न
Complete the following table which relates to the homologous series of hydrocarbons.
| General formulaе | IUPAC name of the homologous series | Characteristic bond type | IUPAC name of the first member of the series |
| CnH2n−2 | (A) ______ | (B) ______ | (C) ______ |
| CnH2n+1 | (B) ______ | (E) ______ | (F) ______ |
Carbon compounds have usually ______ melting points and boiling points because they are ______ in nature.
Give the molecular formula of one homologue of the following:
C3H6
Write the name and molecular formula of the first member of the homologous series of alkynes.
Define homologous series of organic compounds. List its two characteristics. Write the name and formula of the first member of the series of alkenes.
Find the odd one out and give its explanation.
Right or wrong sentence.
As one ascends in any homogeneous category, physical properties change in one direction.
There are different general molecular formula for all members of the homologous series.
Name the following:
Group of organic compounds where the successive members follow a regular structural pattern, successive compounds differ by a 'CH2' group.
