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प्रश्न
Name the third homologue of aldehydes.
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उत्तर
Propanal, which has the chemical formula C3H6O, is an aldehyde's third homologue. Having a carbonyl group (C=O) attached to the second carbon, it consists of a straight chain of three carbon atoms.
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संबंधित प्रश्न
Write the molecular formula of first two members of homologous series having functional group −Br.
Write the molecular formula of the 2nd and 3rd member of the homologous series where the first member is ethyne.
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?
An organic compound having the molecular formula C3H6O can exist in the form of two isomers A and B having different functional groups. The isomer A is a liquid which is used as a solvent for nail polish. The isomer B is also a liquid. An aqueous solution of one of the lower homologues of B is used for preserving biological specimens in the laboratory
(a) What is compound A?
(b) Write the electron-dot structure of A.
(c) What is compound B?
(d) Write the electron-dot structure of B.
(e) Name the lower homologue of compound B which is used in preserving biological specimens.
Give the abbreviated formula of the third member of the alcohol.
Write names of first four homologous series of alcohols.
The general formula of Alkane is _________________
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 |
Which of the following pairs can be the successive members of a homologous series?
The first member of alkyne homologous series is
