Draw the structures of all isomeric alcohols of molecular formula `C_(5)H_(12)O`and give their IUPAC names .
(b) Classify these isomers as primary secondary and tertiary alcohols .

Explanation

Eight isomeric alcohols of molecular formula `C_(5)H_(12)O` are possible .These are as follow :
(i) `underset("Pentan" -1 -ol(1^(@)))(CH_(3)-CH_(2)-CH_(2)-CH_(2)-CH_(2)-OH)`
(ii) `underset("Pentan-2-ol"(2^(@)))(CH_(3)-CH_(2)-CH_(2)-overset(CH_(3))overset(|)(CH)-CH_(3))`
(iii) `underset("Pentan-3-ol"(2^(@)))(CH_(3)-CH_(2)-overset(OH)overset(|)(CH)-CH_(2)-CH_(3))`
(iv) `underset("2-Methylbutan-1-ol"(1^(@)))(CH_(3)-CH_(2)-overset(CH_(3))overset(|)(CH)-CH_(2)-OH)`
(v) `underset("3-Methylbutan-1-ol"(1^(@)))(CH_(3)-overset(CH_(3))overset(|)(CH)-CH_(2)-CH_(2)-OH)`
(vi) `underset("2-Methylbutan-2-ol"(3^(@)))(CH_(3)-underset(OH)underset(|)overset(CH_(3))overset(|)(C)-CH_(2)-CH_(2)-CH_(3))`
(vii) `underset("2,2-Dimethylpropan-1-ol(1^(@)))(CH_(3)-underset(CH_(3))underset(|)overset(CH_(3))overset(|)(C)-CH_(2)-CH_(2)-OH)`
(viii) `underset("3- Methylbutan -2-ol"(2^(@)))(CH_(3)-overset(CH_(3))overset(|)(CH)-overset(OH)overset(|)(CH)-CH_(3))`