Answer true or false.
(a) Phenols and alcohols have in common the presence of an —OH group.
(b) Phenols are weak acids and react with strong bases to give water-soluble salts.
(c) The pKa of phenol is smaller than that of acetic acid.
(d) Autoxidation converts an R—H group to an R—OH (hydroxyl) group.
(e) A carbon radical has only seven electrons in the valence shell of one of its carbons, and this carbon bears a positive charge.
(f ) A characteristic of a chain initiation step is conversion of a nonradical to a radical.
(g) Autoxidation is a radical-chain process.
(h) A characteristic of the chain propagation step is reaction of a radical and a molecule to form a new radical and a new molecule.
(i) Vitamin E and other natural antioxidants function by interrupting the cycle of chain propagation steps that occurs in autoxidation.
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