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प्रश्न
Give the names of the first four members of the homologous series of
alkynes.
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उत्तर
First four members of the homologus series of alkynes are:
• Ethyne
• Propyne
• Butyne
• Pentyne
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संबंधित प्रश्न
Write the molecular formula of first two members of homologous series having functional group -Cl.
What is the difference between two consecutive homologues:
(1) in terms of molecular mass?
(2) in terms of number and kind of atoms per molecule?
Give the abbreviated formula of the third member of the alcohol.
What is homologous series ?
What is the difference in the molecular formula of any two adjacent homologues in terms of molecular mass?
Give three points to differentiate between saturated and unsaturated
hydrocarbons.
What is a homologous series?
Assertion (A): In a homologous series of alcohols, the formula for the second member is C2H5OH and the third member is C3H7OH.
Reason (R): The difference between the molecular masses of the two consecutive members of a homologous series is 144.
Study and complete the following table:
| Homologous series | Alkane | Alkyne |
| General formula | CnH2n+2 | 1. ______ |
| IUPAC name | 2. ______ | Ethyne |
| Common name | Marsh gas | 3. ______ |
A carbon compound ‘A’ having melting point 156K and boiling point 351K, with molecular formula C2H6O is soluble in water in all proportions.
- Identify ‘A’ and draw its electron dot structure.
- Give the molecular formulae of any two homologues of ‘A’.
