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प्रश्न
Explain the concept of heteroatoms with the help of examples.
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उत्तर
- Many carbon compounds are formed in which atoms of elements such as oxygen, nitrogen, sulphur, halogens, etc., substitute one or more hydrogen atoms in the hydrocarbon chain.
- The atom of an element other than carbon and hydrogen which replaces one or more hydrogen atoms in the hydrocarbon chain is called a heteroatom.
- The compound acquires specific chemical properties due to these hetero atoms or the groups of atoms that contain heteroatoms, irrespective of the length and nature of the carbon chain in that compound. Therefore, these hetero atoms or the groups of atoms containing hetero atoms are called functional groups.
- E.g. In CH3OH, the functional group contains hetero atom ‘O’.
In CH3CH2Cl, the functional group contains hetero atom ‘Cl’.
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संबंधित प्रश्न
Explain the following term with an example.
Functional group
Give names of three functional groups containing three different hetero atoms. Write name and structural formula of one example each.
Find the odd one out and give its explanation.
Write the molecular formula of the given compound.
Ethyl ethanoate
Write the molecular formula of the given compound.
Acetylene
Write the molecular formula of the given compound.
Propene
Carbon compounds contain only open chains of carbon atoms.
Benzene is a cyclic unsaturated hydrocarbon.
Explain the Catenation power.
Distinguish between:
Saturated hydrocarbons - Unsaturated hydrocarbons
Distinguish between:
Open chain hydrocarbons - Closed chain hydrocarbons
Write a short note.
Catenation power
Complete the given chart with writing the correct functional group of carbon compounds.
(Ester, Aldehyde, Ketone, Carboxylic acid, Alcohol, Ether)
| -O-H | |
| \[\begin{array}{cc} \ce{O}\phantom{..}\\ ||\phantom{..}\\ \ce{-C-H} \end{array}\] |
|
| \[\begin{array}{cc} \ce{O}\\ ||\\ \ce{-C-} \end{array}\] |
|
| \[\begin{array}{cc} \ce{O}\phantom{.....}\\ ||\phantom{.....}\\ \ce{-C-O-H} \end{array}\] |
|
| -O- | |
| \[\begin{array}{cc} \ce{O}\phantom{..}\\ ||\phantom{..}\\ \ce{-C-O} \end{array}\] |
|
|
\[\begin{array}{cc} |
Which of these is true for most of the organic compounds?
Chlorine reacts with saturated hydrocarbons at room temperature in the
Consider the following organic compounds:
| (i) \[\begin{array}{cc} \ce{H}\phantom{...}\ce{H}\phantom{...}\ce{H}\\ |\phantom{....}|\phantom{....}|\\ \ce{H - C - C - C = O}\\ |\phantom{....}|\phantom{.....}\\ \ce{H}\phantom{....}\ce{H}\phantom{.....} \end{array}\] |
(ii) \[\begin{array}{cc} \phantom{....}\ce{H}\phantom{...}\ce{H}\phantom{....}\\ \phantom{....}|\phantom{....}|\phantom{....}\\ \ce{H - C - C = O}\\|\phantom{.....}\\ \ce{H}\phantom{.....}\end{array}\] |
- Name the functional group present in these compounds.
- Write the general formula for the compounds of this functional group.
- State the relationship between these compounds and draw the structure of any other compound having a similar functional group.
Identify heteroatom (s) in the following compound.
\[\ce{CH3CH2Cl}\]
