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प्रश्न
Write the name and formula of the 2nd member of homologous series having general formula CnH2n + 2.
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उत्तर
CnH2n+2 is the general formula for the alkane series. The second member of the alkane family is ethane with the formula C2H6.
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संबंधित प्रश्न
What is meant by homologous series of carbon compounds?
Define homologous series of organic compounds. List its two characteristics. Write the name and formula of the first member of the series of alkenes.
What is a homologous series?
The phenomenon in which compounds having different structural formulae have the same molecular formula is called _______.
Cyclohexane : Cyclic hydrocarbon : : Isobutylene : _______
Complete the following table for homologous series of alcohols.
| Name | Molecular formula | Condensed structural formula | Number of carbon atom | Number of -CH2- units | Boiling point °C |
| Methanol | CH4O | CH3-OH | 1 | 1 | 63 |
| Ethanol | C2H6O | CH3–CH2-OH | 2 | 2 | 78 |
| Propanol | C3H8O | CH3–CH2–CH2-OH | ______ | ______ | 97 |
| Butanol | C4H10O | CH3–CH2–CH2–CH2–OH | ______ | ______ | 118 |
What is called homologous series? Give any three of its characteristics?
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’.
Name the third homologue of alcohols.
