Question

Instructor Name: Date: Qualitative tests for Saturated and Unsaturated Hydrocarbons Data Sheet A. Combustion Reaction Balanced Chemical Equation for Combustion Hydrocarbon Observation when ignited in the presence of oxygen Cyclohexane Very light smoke (C6H12) Cyclohexene Dense black smoke (C6H10) Toluene Very dense black smke, (CH) Unknown Dense black smoke B B. Bromine Test Structural formula of product (if reaction occurs) Hydro bon Observations Cyclohexane (CH2) Orange-red color of bromine stays Cyclohexene (CH) Orange-red color of bromine disappears Toluene (CH) Orange-red color of bromine stays Unknown B Orange-red color of bromine disappears

Answer 1

Combustion Reaction:- 1) Cyclo hexane: CG H12 + 9 0 Gogg)+ 6H₂O (9) + heat Cyclo hexene : 2C6H10 + 170,21,12.0094 10 M2009) + heat 3) Toluene: cq Hq +90₂9) 76o (9) + 4H2O(g) + heat Bromine Test: Hydrocarbon observations j) Cyclohexane ceste) Orange - red Stuctural formula of the product (if reaction Ocens) Cyclohexane does not reacts with bromine as it does not contains any unsaturation. Color of bromine stays i cyclohex ene (estio) Orange red color of Br2 disappears Co Hot Br2 r21 otho Brz Tomore) in Toluene : Orange Color of Br2 Stays. As the a&l doluble bond (C=C) that present in toluene are resonance Stabilized does not behave as the free double (Cec) bond So, it does not react with Brz