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How many different isomeric alkynes on catalytic hydrogenation gives the same 3-ethyl hexane?
- a)2
- b)3
- c)4
- d)6
Correct answer is option 'C'. Can you explain this answer?
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How many different isomeric alkynes on catalytic hydrogenation gives t...
Isomeric Alkynes and Catalytic Hydrogenation
Concept: Isomers are molecules that have the same molecular formula but different structural arrangements. Alkynes are hydrocarbons having at least one triple bond between two carbon atoms. Catalytic hydrogenation is the addition of hydrogen to an unsaturated organic compound in the presence of a catalyst. Catalytic hydrogenation of alkynes involves the addition of two hydrogen atoms across the triple bond, resulting in an alkane.
Explanation:
The given compound is 3-ethylhexane. The molecular formula of 3-ethylhexane is C8H18. The possible isomeric alkynes of C8H18 are:
1. Octyne-1
2. Octyne-2
3. Octyne-3
4. Octyne-4
5. Octyne-5
6. Octyne-6
Catalytic hydrogenation of octyne-1 and octyne-5 would result in the formation of the same product, i.e., 3-ethylhexane. Similarly, catalytic hydrogenation of octyne-2 and octyne-4 would also result in the formation of 3-ethylhexane. However, catalytic hydrogenation of octyne-3 and octyne-6 would result in the formation of different products.
Therefore, the total number of different isomeric alkynes that on catalytic hydrogenation gives the same 3-ethylhexane is 4.
Answer: The correct option is (C) 4.
Concept: Isomers are molecules that have the same molecular formula but different structural arrangements. Alkynes are hydrocarbons having at least one triple bond between two carbon atoms. Catalytic hydrogenation is the addition of hydrogen to an unsaturated organic compound in the presence of a catalyst. Catalytic hydrogenation of alkynes involves the addition of two hydrogen atoms across the triple bond, resulting in an alkane.
Explanation:
The given compound is 3-ethylhexane. The molecular formula of 3-ethylhexane is C8H18. The possible isomeric alkynes of C8H18 are:
1. Octyne-1
2. Octyne-2
3. Octyne-3
4. Octyne-4
5. Octyne-5
6. Octyne-6
Catalytic hydrogenation of octyne-1 and octyne-5 would result in the formation of the same product, i.e., 3-ethylhexane. Similarly, catalytic hydrogenation of octyne-2 and octyne-4 would also result in the formation of 3-ethylhexane. However, catalytic hydrogenation of octyne-3 and octyne-6 would result in the formation of different products.
Therefore, the total number of different isomeric alkynes that on catalytic hydrogenation gives the same 3-ethylhexane is 4.
Answer: The correct option is (C) 4.
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How many different isomeric alkynes on catalytic hydrogenation gives t...
Correct answer is B because when the hydrogen atoms are added to alkene presence of metal than double bond converted into single bond . than three molecules give
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How many different isomeric alkynes on catalytic hydrogenation gives the same 3-ethyl hexane?a)2b)3c)4d)6Correct answer is option 'C'. Can you explain this answer?
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How many different isomeric alkynes on catalytic hydrogenation gives the same 3-ethyl hexane?a)2b)3c)4d)6Correct answer is option 'C'. Can you explain this answer? for JEE 2025 is part of JEE preparation. The Question and answers have been prepared according to the JEE exam syllabus. Information about How many different isomeric alkynes on catalytic hydrogenation gives the same 3-ethyl hexane?a)2b)3c)4d)6Correct answer is option 'C'. Can you explain this answer? covers all topics & solutions for JEE 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for How many different isomeric alkynes on catalytic hydrogenation gives the same 3-ethyl hexane?a)2b)3c)4d)6Correct answer is option 'C'. Can you explain this answer?.
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