Question:
The number of isomeric hexanes is:
The number of isomeric hexanes is:
Updated On: Jun 23, 2023
- 5
- 2
- 3
- 4
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The Correct Option is A
Solution and Explanation
Draw the structure, name them and count them. $ {{C}_{6}}{{H}_{14}}- $ hexane. (i) $ C{{H}_{3}}-\underset{\text{hexane}}{\mathop{C{{H}_{2}}}}\,-C{{H}_{2}}-C{{H}_{2}}-C{{H}_{2}}-C{{H}_{3}} $ (ii) $ C{{H}_{3}}-\underset{2-\text{mehtyl}\,\text{pentane}}{\mathop{\overset{C{{H}_{3}}}{\mathop{\overset{|}{\mathop{C}}\,}}\,H-C{{H}_{2}}-C{{H}_{2}}}}\,-C{{H}_{3}} $ (iii) $ \underset{3-\text{methyl}\,\text{pentane}}{\mathop{C{{H}_{3}}-C{{H}_{2}}-\overset{C{{H}_{3}}}{\mathop{\overset{|}{\mathop{C}}\,}}\,H-C{{H}_{2}}-C{{H}_{3}}}}\, $ (iv) $ \underset{2,2-\text{dimethyl}\,\,\text{butane}}{\mathop{C{{H}_{3}}-C{{H}_{2}}-\underset{C{{H}_{3}}}{\overset{C{{H}_{3}}}{\mathop{\underset{|}{\overset{|}{\mathop{C}}}\,}}}\,-C{{H}_{3}}}}\, $ (v) $ \underset{2,3dimethyl\,butane}{\mathop{C{{H}_{3}}-\overset{C{{H}_{3}}}{\mathop{\overset{|}{\mathop{C}}\,}}\,H-\overset{C{{H}_{3}}}{\mathop{\overset{|}{\mathop{C}}\,}}\,H-C{{H}_{3}}}}\, $ $ \therefore $ Total of 5 isomeric hexanes are possible.
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Concepts Used:
Organic Chemistry - Some Basic Principles and Techniques
Organic Chemistry is a subset of chemistry dealing with compounds of carbon. Therefore, we can say that Organic chemistry is the chemistry of carbon compounds and is 200-225 years old. Carbon forms bond with itself to form long chains of hydrocarbons, e.g.CH4, methane and CH3-CH3 ethane. Carbon has the ability to form carbon-carbon bonds quite elaborately. Polymers like polyethylene is a linear chain where hundreds of CH2 are linked together.
Read Also: Organic Compounds
Importance of Organic Chemistry:
Organic chemistry is applicable in a variety of areas including-
- Medicines: Example- Aspirin which is a headache medicine and Ibuprofen is a painkiller, both are organic compounds. Other examples include paracetamol.
- Food: Example- Starch which is a carbohydrate is an organic compound and a constituent of rice and other grains. It is the source of energy.
- Clothing: Example- Nylon, Polyester and Cotton are forms of organic compounds.
- Fuels: Examples- Gasoline, Petrol and Diesel are organic compounds used in the automobile industry at large.