Class 11 Exam > Class 11 Questions > Which of the following statements correctly d...
Start Learning for Free
Which of the following statements correctly describes the general reactivity of alkynes?
- a)Alkynes are more reactive than alkenes
- b)Alkynes reacts as an electrophile
- c)Unlike alkenes, alkynes do not undergo electrophilic addition reaction
- d)An alkene is electron rich molecule, therefore react as a nucleophile
Correct answer is option 'D'. Can you explain this answer?
| FREE This question is part of | Download PDF Attempt this Test |
Verified Answer
Which of the following statements correctly describes the general reac...
The correct answer is option D
The clouds of electrons surrounding the sigma bond makes an alkyne an electron-rich molecule. They are therefore nucleophiles that react with electrophiles. Thus alkynes, like alkenes, undergo electrophilic addition reactions because of their weak pi bonds. When a proton adds to an alkyne, a vinylic cation is formed.
The clouds of electrons surrounding the sigma bond makes an alkyne an electron-rich molecule. They are therefore nucleophiles that react with electrophiles. Thus alkynes, like alkenes, undergo electrophilic addition reactions because of their weak pi bonds. When a proton adds to an alkyne, a vinylic cation is formed.
Most Upvoted Answer
Which of the following statements correctly describes the general reac...
General Reactivity of Alkynes
Alkynes are a class of hydrocarbons that contain a carbon-carbon triple bond. They exhibit unique reactivity compared to other unsaturated hydrocarbons like alkenes. Let's examine the statements given and determine which one correctly describes the general reactivity of alkynes.
a) Alkynes are more reactive than alkenes
This statement is false. Alkynes are generally less reactive than alkenes. This is because the triple bond in alkynes is stronger and more stable than the double bond in alkenes. The presence of the triple bond in alkynes makes it more difficult for other molecules to approach and react with the carbon-carbon bond.
b) Alkynes react as an electrophile
This statement is partially correct. Alkynes can act as electrophiles in certain reactions. The electron-deficient carbon atoms in the triple bond of alkynes can attract electron-rich species, making them susceptible to electrophilic attack. However, it is important to note that not all reactions involving alkynes proceed through electrophilic addition.
c) Unlike alkenes, alkynes do not undergo electrophilic addition reaction
This statement is false. Alkynes can undergo electrophilic addition reactions, just like alkenes. In fact, alkynes are even more reactive towards electrophilic addition reactions due to the presence of the triple bond. The pi electrons in the triple bond can be easily attacked by electrophiles, leading to the addition of new atoms or groups to the carbon-carbon triple bond.
d) An alkene is an electron-rich molecule, therefore reacts as a nucleophile
This statement is correct. Alkenes, not alkynes, are electron-rich molecules and can act as nucleophiles in certain reactions. The pi electrons in the double bond of alkenes are more available for donation to electron-deficient species, making them capable of attacking electrophiles and undergoing nucleophilic addition reactions.
In summary, the correct statement describing the general reactivity of alkynes is option 'D': An alkene is an electron-rich molecule, therefore reacts as a nucleophile. Alkynes, on the other hand, can act as electrophiles and undergo electrophilic addition reactions.
Alkynes are a class of hydrocarbons that contain a carbon-carbon triple bond. They exhibit unique reactivity compared to other unsaturated hydrocarbons like alkenes. Let's examine the statements given and determine which one correctly describes the general reactivity of alkynes.
a) Alkynes are more reactive than alkenes
This statement is false. Alkynes are generally less reactive than alkenes. This is because the triple bond in alkynes is stronger and more stable than the double bond in alkenes. The presence of the triple bond in alkynes makes it more difficult for other molecules to approach and react with the carbon-carbon bond.
b) Alkynes react as an electrophile
This statement is partially correct. Alkynes can act as electrophiles in certain reactions. The electron-deficient carbon atoms in the triple bond of alkynes can attract electron-rich species, making them susceptible to electrophilic attack. However, it is important to note that not all reactions involving alkynes proceed through electrophilic addition.
c) Unlike alkenes, alkynes do not undergo electrophilic addition reaction
This statement is false. Alkynes can undergo electrophilic addition reactions, just like alkenes. In fact, alkynes are even more reactive towards electrophilic addition reactions due to the presence of the triple bond. The pi electrons in the triple bond can be easily attacked by electrophiles, leading to the addition of new atoms or groups to the carbon-carbon triple bond.
d) An alkene is an electron-rich molecule, therefore reacts as a nucleophile
This statement is correct. Alkenes, not alkynes, are electron-rich molecules and can act as nucleophiles in certain reactions. The pi electrons in the double bond of alkenes are more available for donation to electron-deficient species, making them capable of attacking electrophiles and undergoing nucleophilic addition reactions.
In summary, the correct statement describing the general reactivity of alkynes is option 'D': An alkene is an electron-rich molecule, therefore reacts as a nucleophile. Alkynes, on the other hand, can act as electrophiles and undergo electrophilic addition reactions.
Free Test
FREE
| Start Free Test |
Community Answer
Which of the following statements correctly describes the general reac...
The correct answer is option D
The clouds of electrons surrounding the sigma bond makes an alkyne an electron-rich molecule. They are therefore nucleophiles that react with electrophiles. Thus alkynes, like alkenes, undergo electrophilic addition reactions because of their weak pi bonds. When a proton adds to an alkyne, a vinylic cation is formed.
The clouds of electrons surrounding the sigma bond makes an alkyne an electron-rich molecule. They are therefore nucleophiles that react with electrophiles. Thus alkynes, like alkenes, undergo electrophilic addition reactions because of their weak pi bonds. When a proton adds to an alkyne, a vinylic cation is formed.
Attention Class 11 Students!
To make sure you are not studying endlessly, EduRev has designed Class 11 study material, with Structured Courses, Videos, & Test Series. Plus get personalized analysis, doubt solving and improvement plans to achieve a great score in Class 11.
|
Explore Courses for Class 11 exam
|
|
Similar Class 11 Doubts
Top Courses for Class 11View all
Which of the following statements correctly describes the general reactivity of alkynes?a)Alkynes are more reactive than alkenesb)Alkynes reacts as an electrophilec)Unlike alkenes, alkynes do not undergo electrophilic addition reactiond)An alkene is electron rich molecule, therefore react as a nucleophileCorrect answer is option 'D'. Can you explain this answer?
Question Description
Which of the following statements correctly describes the general reactivity of alkynes?a)Alkynes are more reactive than alkenesb)Alkynes reacts as an electrophilec)Unlike alkenes, alkynes do not undergo electrophilic addition reactiond)An alkene is electron rich molecule, therefore react as a nucleophileCorrect answer is option 'D'. Can you explain this answer? for Class 11 2024 is part of Class 11 preparation. The Question and answers have been prepared according to the Class 11 exam syllabus. Information about Which of the following statements correctly describes the general reactivity of alkynes?a)Alkynes are more reactive than alkenesb)Alkynes reacts as an electrophilec)Unlike alkenes, alkynes do not undergo electrophilic addition reactiond)An alkene is electron rich molecule, therefore react as a nucleophileCorrect answer is option 'D'. Can you explain this answer? covers all topics & solutions for Class 11 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Which of the following statements correctly describes the general reactivity of alkynes?a)Alkynes are more reactive than alkenesb)Alkynes reacts as an electrophilec)Unlike alkenes, alkynes do not undergo electrophilic addition reactiond)An alkene is electron rich molecule, therefore react as a nucleophileCorrect answer is option 'D'. Can you explain this answer?.
Which of the following statements correctly describes the general reactivity of alkynes?a)Alkynes are more reactive than alkenesb)Alkynes reacts as an electrophilec)Unlike alkenes, alkynes do not undergo electrophilic addition reactiond)An alkene is electron rich molecule, therefore react as a nucleophileCorrect answer is option 'D'. Can you explain this answer? for Class 11 2024 is part of Class 11 preparation. The Question and answers have been prepared according to the Class 11 exam syllabus. Information about Which of the following statements correctly describes the general reactivity of alkynes?a)Alkynes are more reactive than alkenesb)Alkynes reacts as an electrophilec)Unlike alkenes, alkynes do not undergo electrophilic addition reactiond)An alkene is electron rich molecule, therefore react as a nucleophileCorrect answer is option 'D'. Can you explain this answer? covers all topics & solutions for Class 11 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Which of the following statements correctly describes the general reactivity of alkynes?a)Alkynes are more reactive than alkenesb)Alkynes reacts as an electrophilec)Unlike alkenes, alkynes do not undergo electrophilic addition reactiond)An alkene is electron rich molecule, therefore react as a nucleophileCorrect answer is option 'D'. Can you explain this answer?.
Solutions for Which of the following statements correctly describes the general reactivity of alkynes?a)Alkynes are more reactive than alkenesb)Alkynes reacts as an electrophilec)Unlike alkenes, alkynes do not undergo electrophilic addition reactiond)An alkene is electron rich molecule, therefore react as a nucleophileCorrect answer is option 'D'. Can you explain this answer? in English & in Hindi are available as part of our courses for Class 11.
Download more important topics, notes, lectures and mock test series for Class 11 Exam by signing up for free.
Here you can find the meaning of Which of the following statements correctly describes the general reactivity of alkynes?a)Alkynes are more reactive than alkenesb)Alkynes reacts as an electrophilec)Unlike alkenes, alkynes do not undergo electrophilic addition reactiond)An alkene is electron rich molecule, therefore react as a nucleophileCorrect answer is option 'D'. Can you explain this answer? defined & explained in the simplest way possible. Besides giving the explanation of
Which of the following statements correctly describes the general reactivity of alkynes?a)Alkynes are more reactive than alkenesb)Alkynes reacts as an electrophilec)Unlike alkenes, alkynes do not undergo electrophilic addition reactiond)An alkene is electron rich molecule, therefore react as a nucleophileCorrect answer is option 'D'. Can you explain this answer?, a detailed solution for Which of the following statements correctly describes the general reactivity of alkynes?a)Alkynes are more reactive than alkenesb)Alkynes reacts as an electrophilec)Unlike alkenes, alkynes do not undergo electrophilic addition reactiond)An alkene is electron rich molecule, therefore react as a nucleophileCorrect answer is option 'D'. Can you explain this answer? has been provided alongside types of Which of the following statements correctly describes the general reactivity of alkynes?a)Alkynes are more reactive than alkenesb)Alkynes reacts as an electrophilec)Unlike alkenes, alkynes do not undergo electrophilic addition reactiond)An alkene is electron rich molecule, therefore react as a nucleophileCorrect answer is option 'D'. Can you explain this answer? theory, EduRev gives you an
ample number of questions to practice Which of the following statements correctly describes the general reactivity of alkynes?a)Alkynes are more reactive than alkenesb)Alkynes reacts as an electrophilec)Unlike alkenes, alkynes do not undergo electrophilic addition reactiond)An alkene is electron rich molecule, therefore react as a nucleophileCorrect answer is option 'D'. Can you explain this answer? tests, examples and also practice Class 11 tests.
|
|
Explore Courses for Class 11 exam
|
|
Signup for Free!
Signup to see your scores go up within 7 days! Learn & Practice with 1000+ FREE Notes, Videos & Tests.
|
© EduRev
|
Education Revolution
|
Follow Us
|
Signup to see your scores
go up within 7 days!
Access 1000+ FREE Docs, Videos and Tests
Takes less than 10 seconds to signup