Chemistry of HydrocarbonsFree-Radical Halogenation of Alkanes46Choose the best answerWhich step regenerates Cl• and therefore propagates the chlorination chain?ACl₂ → 2Cl•BCH₃• + Cl₂ → CH₃Cl + Cl•CCH₃• + CH₃• → C₂H₆DCl• + Cl• → Cl₂ Like 0 Discuss 0Share
Chemistry of HydrocarbonsFriedel–Crafts Alkylation47Choose the best answerFriedel–Crafts acylation is often preferred over direct alkylation because alkylation may:AAlways produce a poisonous gasBRelease exceptionally large heat onlyCProduce polyalkylated productsDBe impossible with AlCl₃ Like 0 Discuss 0Share
Chemistry of HydrocarbonsAromaticity and Stability of Benzene48Choose the best answerThe unusual stability of benzene is mainly due to:AHyperconjugation onlyBResonance and aromatic delocalizationCHydrogen bondingDInductive effect only Like 0 Discuss 0Share
Chemistry of HydrocarbonsNitration of Benzene49Choose the best answerWhich reagent mixture is used for nitration of benzene?AConcentrated HNO₃ + concentrated H₂SO₄BHCl + HNO₃CH₂SO₄ + HClDHNO₃ + NaOH Like 0 Discuss 0Share
Chemistry of HydrocarbonsElectrophilic Aromatic Substitution50Choose the best answerBenzene mainly undergoes:AAddition reactionsBElectrophilic substitution reactionsCNucleophilic substitution reactionsDElimination reactions Like 0 Discuss 0Share