Electrophilic addition - hydrogenation H2 Electrophilic substitution -nitrosation, keto - enol tautomerism Nucleophilic addition - addition of HCN to propanone Nucleophilic Substitution (SN1 SN2) - hydrolysis of tert-butyl chloride is a typical SN1 reaction Solution Electrophilic addition - hydrogenation H2 Electrophilic substitution -nitrosation, keto - enol tautomerism Nucleophilic addition - addition of HCN to propanone Nucleophilic Substitution (SN1 SN2) - hydrolysis of tert-butyl chloride is a typical SN1 reaction.