What is the major product [ P₃ ] formed when n- Hexane undergoes the given series of reactions: n-Hexane V₂O₅; 20 atm, 773k [ P ₁] C₂H₅Cl, Anhyd.AlCl₃; [ P ₂] Conc.HNO₃ + H₂SO₄; 333K [ P ₃] Major product ( n -Hexane V ₂ O ₅ 20 ~atm , 773 k [ P ₁ ] ) ( [ P ₁ ] [ ] C ₂ H ₅ Cl , Anhyd. AlCl ₃ [ P ₂ ] ) ( [ P ₂ ] [333 ~K ] Conc. HNO ₃+ H ₂ SO ₄ [ P ₃ ] ) Major product

Step-by-step solution

The first step involves the reaction of n-hexane over V₂O₅ at 773 K and 20 atm. This is an aromatization reaction where n-hexane undergoes dehydrogenation and cyclization to form benzene. Thus, [P₁] is benzene ( C₆H₆ ). The second step is the reaction of benzene ( [P₁] ) with ethyl chloride ( C₂H₅Cl ) in the presence of anhydrous AlCl₃ and heat. This is a Friedel-Crafts alkylation reaction. The electrophile, ethyl cation ( C₂H₅^+ ), attacks the benzene ring to form ethylbenzene. Thus, [P₂] is ethylbenzene ( C₆H₅CH₂