(a)

(i) Secondary alcohols have two carbons attached to the carbon with the hydroxyl group (-OH).

(ii)

(iii) The boiling points of the four primary alcohols increase as their molecular mass increases as there is hydrogen bonding between the molecules, which is a strong intermolecular bond. Therefore, the larger the molecule, the more energy required to break these bonds; hence, a higher boiling point.

(iv) Approximate boiling point: 118-119 ^oC

(b)

(i) Butanal and butanoic acid

(ii)

(iii) C-O and O-H

(c)

(i)

(ii) 3 carbons are tetrahedrally bonded.

(iii) Products: Sodium propanoate and methanol