Question -
Answer -
(ii) Classify the isomers of alcohols in question 11.3 (i) as primary, secondary and tertiary alcohols.
Answer
(i) Thestructures of all isomeric alcohols of molecular formula, C5H12Oare shown below:
(a)
Pentan-1-ol (1°)
(b)
2-Methylbutan-1-ol (1°)
(c)
3-Methylbutan-1-ol (1°)
(d)
2, 2-Dimethylpropan-1-ol (1°)
(e)
Pentan-2-ol (2°)
(f)
3-Methylbutan-2-ol (2°)
(g)
Pentan-3-ol (2°)
(h)
2-Methylbutan-2-ol (3°)
(ii) Primaryalcohol: Pentan-1-ol; 2-Methylbutan-1-ol;
3-Methylbutan-1-ol; 2, 2−Dimethylpropan-1-ol
Secondary alcohol: Pentan-2-ol; 3-Methylbutan-2-ol;
Pentan-3-ol
Tertiary alcohol: 2-methylbutan-2-ol