(a(i))
Write an equation for making nitronium ions, $\text{NO}_2^+$, by this method.
(a(ii))[4]
Finish the scheme to show the mechanism for this reaction. Show the movement of electron pairs with curly arrows.
(b(i))
Describe and explain how the acidities of chloroethanoic acid and ethanoic acid compare.
(b(ii))[3]
Describe and explain how the acidities of phenol and ethanol compare.
(c)[6]
Phenyl 2-hydroxybenzoate is an antiseptic. Complete the table below for the reactions of phenyl 2-hydroxybenzoate with the three reagents: Na, excess $\text{Br}_2$(aq), and excess hot $\text{NaOH}$(aq). For each reagent, provide the structure of the product(s) and state the reaction type.