Question

Most stable carbocation is formed by the heterolysis of ___________.

• A. $(C{H}_3{)}_{3}CBr$
• B. $(C_6{H}_5{)}_{3}CBr$
• C. $(C_6{H}_5{)}_{2}CHBr$
• D. $C_6{H}_{5}C{H}_{2}Br$

Answer 1

The correct option is B $(C_6{H}_5{)}_{3}CBr$

The stability of carbocations increases as we go from primary to secondary to tertiary carbons. The most stable carbocation is formed by heterolysis of $(C_6{H}_5{)}_{3}CBr$ which determined by contribution of inductive effect, hyperconjugation and resonance effect.