Which one of the following does not dissolve in conc. H2SO4 :–
Which one of the following does not dissolve in conc. H2SO4 :–
(a) CH3 - C ≡C - CH3
(b) Ch3 - CH2 - C ≡ CH
(c) CH ≡ CH
(d) CH2 ≡ CH2
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Correct Option (c) CH ≡ CH
Explanation :
If CH ≡ CH were to dissolve in H2SO4 a bisulphite salt of vinyl carbocation H2C = C+H would be formed. The more s-character in the pos itively charged 'C' , less stable is the carbocation and less likely to be formed.
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