Class 11 Exam  >  Class 11 Questions  >  Acetylenic hydrogens are acidic because [198... Start Learning for Free
Acetylenic hydrogens are acidic because   [1989]

  • a)
    Sigma electron density of C – H bond in acetylene is nearer to carbon, which has 50% s-character

  • b)
    Acetylene has only open hydrogen in each carbon

  • c)
    A c etylen e co n ta in s le ast nu mb e r o f hydrogens among the possible hydrocarbons having two carbons

  • d)
    Acetylene belongs to the class of alkynes with molecular formula, CnH2n – 2

Correct answer is option 'A'. Can you explain this answer?
Verified Answer
Acetylenic hydrogens are acidic because [1989]a)Sigma electron densit...
The acidity of acetylene or 1--alkynes can be explained on the basis of molecular orbital concept according to which formation of C—H bond in acetylene involves sphybridised carbon atom. Now since s electrons are closer to the nucleus than p electrons, the electrons present in a bond having more s character will be correspondingly more closer to the nucleus.

Thus owing to high s character of the C—H bond in alkynes (s = 50%), the electrons constituting this bond are more strongly held by the carbon nucleus (i.e., the acetylenic carbon atom or the sp orbital acts as more electronegative species than the sp2 and sp3 with the result the hydrogen  present on such a carbon atom (≡C—H) can be esily removed as a proton.

View all questions of this test
Most Upvoted Answer
Acetylenic hydrogens are acidic because [1989]a)Sigma electron densit...
Bonds is low
b)Sigma electron density of C bonds is high
c)The carbon atom is sp2 hybridized
d)The carbon atom is sp hybridized
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

Top Courses for Class 11

Acetylenic hydrogens are acidic because [1989]a)Sigma electron density of C – H bond in acetylene is nearer to carbon, which has 50% s-characterb)Acetylene has only open hydrogen in each carbonc)A c etylen e co n ta in s le ast nu mb e r o f hydrogens among the possible hydrocarbons having two carbonsd)Acetylene belongs to the class of alkynes with molecular formula, CnH2n – 2Correct answer is option 'A'. Can you explain this answer?
Question Description
Acetylenic hydrogens are acidic because [1989]a)Sigma electron density of C – H bond in acetylene is nearer to carbon, which has 50% s-characterb)Acetylene has only open hydrogen in each carbonc)A c etylen e co n ta in s le ast nu mb e r o f hydrogens among the possible hydrocarbons having two carbonsd)Acetylene belongs to the class of alkynes with molecular formula, CnH2n – 2Correct answer is option 'A'. 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 Acetylenic hydrogens are acidic because [1989]a)Sigma electron density of C – H bond in acetylene is nearer to carbon, which has 50% s-characterb)Acetylene has only open hydrogen in each carbonc)A c etylen e co n ta in s le ast nu mb e r o f hydrogens among the possible hydrocarbons having two carbonsd)Acetylene belongs to the class of alkynes with molecular formula, CnH2n – 2Correct answer is option 'A'. 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 Acetylenic hydrogens are acidic because [1989]a)Sigma electron density of C – H bond in acetylene is nearer to carbon, which has 50% s-characterb)Acetylene has only open hydrogen in each carbonc)A c etylen e co n ta in s le ast nu mb e r o f hydrogens among the possible hydrocarbons having two carbonsd)Acetylene belongs to the class of alkynes with molecular formula, CnH2n – 2Correct answer is option 'A'. Can you explain this answer?.
Solutions for Acetylenic hydrogens are acidic because [1989]a)Sigma electron density of C – H bond in acetylene is nearer to carbon, which has 50% s-characterb)Acetylene has only open hydrogen in each carbonc)A c etylen e co n ta in s le ast nu mb e r o f hydrogens among the possible hydrocarbons having two carbonsd)Acetylene belongs to the class of alkynes with molecular formula, CnH2n – 2Correct answer is option 'A'. 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 Acetylenic hydrogens are acidic because [1989]a)Sigma electron density of C – H bond in acetylene is nearer to carbon, which has 50% s-characterb)Acetylene has only open hydrogen in each carbonc)A c etylen e co n ta in s le ast nu mb e r o f hydrogens among the possible hydrocarbons having two carbonsd)Acetylene belongs to the class of alkynes with molecular formula, CnH2n – 2Correct answer is option 'A'. Can you explain this answer? defined & explained in the simplest way possible. Besides giving the explanation of Acetylenic hydrogens are acidic because [1989]a)Sigma electron density of C – H bond in acetylene is nearer to carbon, which has 50% s-characterb)Acetylene has only open hydrogen in each carbonc)A c etylen e co n ta in s le ast nu mb e r o f hydrogens among the possible hydrocarbons having two carbonsd)Acetylene belongs to the class of alkynes with molecular formula, CnH2n – 2Correct answer is option 'A'. Can you explain this answer?, a detailed solution for Acetylenic hydrogens are acidic because [1989]a)Sigma electron density of C – H bond in acetylene is nearer to carbon, which has 50% s-characterb)Acetylene has only open hydrogen in each carbonc)A c etylen e co n ta in s le ast nu mb e r o f hydrogens among the possible hydrocarbons having two carbonsd)Acetylene belongs to the class of alkynes with molecular formula, CnH2n – 2Correct answer is option 'A'. Can you explain this answer? has been provided alongside types of Acetylenic hydrogens are acidic because [1989]a)Sigma electron density of C – H bond in acetylene is nearer to carbon, which has 50% s-characterb)Acetylene has only open hydrogen in each carbonc)A c etylen e co n ta in s le ast nu mb e r o f hydrogens among the possible hydrocarbons having two carbonsd)Acetylene belongs to the class of alkynes with molecular formula, CnH2n – 2Correct answer is option 'A'. Can you explain this answer? theory, EduRev gives you an ample number of questions to practice Acetylenic hydrogens are acidic because [1989]a)Sigma electron density of C – H bond in acetylene is nearer to carbon, which has 50% s-characterb)Acetylene has only open hydrogen in each carbonc)A c etylen e co n ta in s le ast nu mb e r o f hydrogens among the possible hydrocarbons having two carbonsd)Acetylene belongs to the class of alkynes with molecular formula, CnH2n – 2Correct answer is option 'A'. Can you explain this answer? tests, examples and also practice Class 11 tests.
Explore Courses for Class 11 exam

Top Courses for Class 11

Explore Courses
Signup for Free!
Signup to see your scores go up within 7 days! Learn & Practice with 1000+ FREE Notes, Videos & Tests.
10M+ students study on EduRev