Chemistry of HydrocarbonsPhysical Properties of Alkanes6Choose the best answerCompared with its straight-chain isomer, a more highly branched alkane generally has a:AHigher boiling pointBLower boiling pointCIdentical boiling pointDBoiling point independent of molecular shape Like 0 Discuss 0Share
Chemistry of HydrocarbonsNitration of Benzene7Choose the best answerThe electrophile that attacks benzene during nitration is:ANO₂⁻BNO₂⁺CNO₃⁻DNO₂• Like 0 Discuss 0Share
Chemistry of HydrocarbonsProperties of Benzene8Choose the best answerWhich is NOT a characteristic property of benzene?APlanar structureBAromaticityCEqual C–C bond lengthsDEasy oxidation by cold dilute KMnO₄ Like 0 Discuss 0Share
Chemistry of HydrocarbonsPhysical Properties of Hydrocarbons9Choose the best answerWhy does the boiling point generally increase as –CH₂– units are added to a homologous series of hydrocarbons?AHydrogen bonding increases.BMolecular size, surface area and dispersion forces increase.CIonic bonds begin to form.DThe molecules acquire permanent ionic charges. Like 0 Discuss 0Share
Chemistry of HydrocarbonsFree-Radical Halogenation of Alkanes10Choose 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