NCERT Class XI Chemistry Hydrocarbons Solutions
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Question : 3
Total: 25
For the following compounds, write structural formulae and IUPAC names of all possible isomers having the number of double or triple bond as indicated :
(a)C 4 H 8
(b)C 5 H 8
(a)
(b)
Solution:
(a) C 4 H 8
(i) But - 1 - ene
H 3 C − H 2 C − H C = C H 2
(ii) 2 - Methylprop - 1 - ene
H 3 C −
= C H 2
(iii) But - 2 - ene
H 3 C − H C = C H − C H 3
(b)C 5 H 8
(i) Pent - 1 - yne
H 3 C − H 2 C − H 2 C − C ≡ C H
(ii) Pent - 2 - yne
H 3 C − H 2 C − C ≡ C − C H 3
(iii) 3 - Methylbut - 1 - yne
H 3 C −
C − C ≡ C H
(i) But - 1 - ene
(ii) 2 - Methylprop - 1 - ene
(iii) But - 2 - ene
(b)
(i) Pent - 1 - yne
(ii) Pent - 2 - yne
(iii) 3 - Methylbut - 1 - yne
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