Answer
427.5k+ views
Hint: Saturated hydrocarbons contain carbon-carbon single bonds whereas unsaturated hydrocarbons contain carbon-carbon double bonds or triple bonds. A single bond includes a sigma bond and a double bond includes both sigma and pi bonds.
Complete step by step answer:
a.Propane
Here carbon-carbon single bond present, thus propane is a saturated hydrocarbon.
b.Propene
Here hydrocarbons contain carbon- carbon double bonds, which indicate that this is an unsaturated hydrocarbon.
c.Propyne
Here carbon- carbon triple bond is present, this is also an unsaturated hydrocarbon.
d.Chloropropane
This compound contains a carbon- carbon single bond, so the compound is saturated hydrocarbon.
Therefore, the correct option is (4) (b) and (c).
Additional information:
The structural formulas of alkanes contain four type of carbon atoms:
(1)A carbon atom which is attached to one another is primary carbon.
(2)A carbon atom which is attached to the other two carbon atoms is called secondary carbon.
(3)A carbon atom which is attached to the other three carbon atoms is called tertiary carbon.
(4)A carbon atom which is attached to other four carbon atoms is called quaternary carbon.
Note:The hydrogen atoms in organic compounds may be classified as primary, secondary, tertiary, allylic or benzylic. There are a total six primary hydrogens and two secondary hydrogens in propane; the ratio of primary to secondary hydrogen in propane is $6/2$ or $3/1$.There is a degree of selectivity in hydrogen abstraction, secondary hydrogen is abstract faster than primary hydrogen.
Complete step by step answer:
a.Propane
![seo images](https://www.vedantu.com/question-sets/3db82157-893a-465c-a67c-4889c36c36c89213188504749934736.png)
Here carbon-carbon single bond present, thus propane is a saturated hydrocarbon.
b.Propene
![seo images](https://www.vedantu.com/question-sets/8559fb77-dba6-494a-80f6-ef77e21021202620008525400211211.png)
Here hydrocarbons contain carbon- carbon double bonds, which indicate that this is an unsaturated hydrocarbon.
c.Propyne
![seo images](https://www.vedantu.com/question-sets/9f772b13-9d29-488d-a756-244c131973ac2026942915428348651.png)
Here carbon- carbon triple bond is present, this is also an unsaturated hydrocarbon.
d.Chloropropane
![seo images](https://www.vedantu.com/question-sets/91a7c44f-524e-4d93-af39-813f69eb514d3062896080607229343.png)
This compound contains a carbon- carbon single bond, so the compound is saturated hydrocarbon.
Therefore, the correct option is (4) (b) and (c).
Additional information:
The structural formulas of alkanes contain four type of carbon atoms:
(1)A carbon atom which is attached to one another is primary carbon.
(2)A carbon atom which is attached to the other two carbon atoms is called secondary carbon.
(3)A carbon atom which is attached to the other three carbon atoms is called tertiary carbon.
(4)A carbon atom which is attached to other four carbon atoms is called quaternary carbon.
Note:The hydrogen atoms in organic compounds may be classified as primary, secondary, tertiary, allylic or benzylic. There are a total six primary hydrogens and two secondary hydrogens in propane; the ratio of primary to secondary hydrogen in propane is $6/2$ or $3/1$.There is a degree of selectivity in hydrogen abstraction, secondary hydrogen is abstract faster than primary hydrogen.
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