Chemical Reactions of Haloalkanes
1. Nucleophilic Substitution Reactions( SN reactions)
kCN is predominantly ionic and provides cyanide ions in solution, which is ambident nucleophile and bind with carbon side to form as the major product, while AgCN is covalent and form isocyanide as the major product.
Like KCN, KNO2 form R-ONO while AgNO2 produces R-NO2 as product. Vinyl chloride is less reactive towards nucleophilic substitution reactions due to resonance.