Answer:
(i) Write the resonating structures of KCN.
Resonating forms of KCN are the following.
Cyanide ion is an ambident nucleophile. It can attack through C-atom or through N-atom. Thus, two possible products are cyanides and isocyanides respectively. Here in the presence of the polar solvent, KCNreadily ionises to furnish ions. As C?C bond is more stable than C?Nbond, so cyanide is predominantly formed.
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