Advertisements
Advertisements
प्रश्न
Write the first four members of the homologous series that begins with CH3CHO. Also, write down their general molecular formula.
Advertisements
उत्तर
| No. | Name of compound and molecular formula | Structural formula |
| 1. | Acetaldehyde (CH3CHO) |
\[\begin{array}{cc}\phantom{...}\ce{O}\\ |
| 2. | Propionaldehyde (C2H5CHO) | \[\begin{array}{cc}\phantom{..........}\ce{O}\\ \phantom{..........}||\\\ce{H3C - CH2 - C - H}\end{array}\] |
| 3. | Butyraldehyde (C3H7CHO) | \[\begin{array}{cc}\phantom{.................}\ce{O}\\ \phantom{.................}||\\\ce{H3C - CH2 - CH2 - C - H}\end{array}\] |
| 4. | Valeraldehyde (C4H9CHO) | \[\begin{array}{cc}\phantom{....................}\ce{O}\\ \phantom{....................}||\\\ce{H3C - (CH2)2 - CH2 - C - H }\end{array}\] |
Comparing these molecular formulae and assigning the number of carbon atoms as ‘n’, the following general formula is deduced: CnH2nO/CnH2n-1CHO (where n = 1,2,3,...)
APPEARS IN
संबंधित प्रश्न
Draw a formula for the first five members of the homologous series beginning with the given compound.
H–COOH
Draw a formula for the first five members of the homologous series beginning with the given compound.
H–CH=CH2
Find out all the functional groups present in the following polyfunctional compound.
Penicillin G, a naturally occurring antibiotic.
Write the first four members of the homologous series that begins with H-C≡C-H. Also, write down their general molecular formula.
Structure of the compound whose IUPAC name is 5, 6 – dimethylhept - 2 - ene is
How many cyclic and acyclic isomers are possible for the molecular formula C3H6O?
Give the general characteristics of organic compounds.
An organic compound containing carbon, hydrogen and oxygen is soluble in dil. H2SO4 and does not react with sodium metal or KMnO4. When it is heated with HI in excess, a single alkyl halide is obtained. The original compound can be ____________.
Which of the following is a hetero-aromatic benzenoid compound?
Which of the following yields only one type of monosubstituted chloroalkane upon chlorination?
Which of the following statements is INCORRECT for the organic compounds which belong to homologous series?
What is the molecular formula of pyran?
Identify the number of carbon atoms and number of oxygen atoms respectively present in pyran molecule.
How many primary, secondary and tertiary carbon atoms respectively are present in isobutane?
Identify the number of carbon atoms and number of oxygen atoms respectively present in furan molecule.
An organic compound 'X' (molecular formula C6H7O2N) has six carbons in a ring system, two double bonds and also a nitro group as a substituent, 'X' is ______.
A and B are:
A pyranose ring consists of a skeleton of ______.
Identify primary, secondary, tertiary and quaternary carbon in the following compound.
\[\begin{array}{cc}
\ce{CH3}\phantom{..................}\\
|\phantom{....................}\\
\ce{CH3 - C - CH - CH2 - CH2 - CH3}\\
|\phantom{....}|\phantom{................}\\
\ce{CH3}\phantom{..}\ce{CH3}\phantom{..............}\\
\end{array}\]
Identify primary, secondary, tertiary, and quaternary carbons in the following compound.
\[\begin{array}{cc}
\ce{CH3\phantom{.................}}\\
|\phantom{....................}\\
\ce{CH3 - C - CH - CH2 - CH2 - CH3}\\
|\phantom{....}|\phantom{................}\\
\ce{CH3 CH3\phantom{.............}}
\end{array}\]
Identify primary, secondary, tertiary and quaternary carbon in the following compound.
\begin{array}{cc}
\ce{CH3}\phantom{..................}\\
|\phantom{....................}\\
\ce{CH3 - C - CH - CH2 - CH2 - CH3}\\
|\phantom{....}|\phantom{................}\\
\ce{CH3}\ce{CH3}\phantom{..............}
\end{array}
Indicate the σ and π bonds in the following molecule:
\[\ce{HCONHCH3}\]
Identify the α-carbons in the following species and give the total number of α-hydrogen.
\[\ce{CH2 = CH - CH2 - CH3}\]
Identify primary, secondary, tertiary and quaternary carbon in the following compound.
\[\begin{array}{cc}
\ce{CH3}\phantom{..................}\\
|\phantom{....................}\\
\ce{CH3 - C - CH - CH2 - CH2 - CH3}\\
|\phantom{....}|\phantom{................}\\
\ce{CH3}\phantom{.}\ce{CH3}\phantom{..............}
\end{array}\]
Which of the following is neopentyl chloride?
