Question

Table 3. Halogenation: Bromination in the presence of light Description of reagent (Brain CCIA) SAMPLE OBSERVATIONS n-Hexane from a light orange to a colenless but hazy 2ndd Cyclohexene from a bary colorles liquid to a light yellow Acetylene Benzene I from an orange legend to transparent liquid from brauge to trousparent liquod Toluene Chemical equations: Golution Table 4. Halogenation: Bromination in the dark Description of reagent (Bra in CCW) Ha u glum ullam coler. Lad detaoline SAMPLE OBSERVATIONS n-Hexane from a dark laty orange to a lighter Cyclohexene from bory to transarent clear erquiol Benzene from a clean reddish orange color to a Saug Set Leter Toluene from dark has orange to on light rasy osongle Chemical equations:

Answer 1

Table 3 and Table 4 reactions are as below-

Aromatic compounds like benzene or toluene do not react with bromine in dark or light whereas alkenes and alkynes react with bromine. Hexane is saturated hydrocarbon and inert and so does not react with bromine.

Table 4. Brz/cely in the dark n-hexane O reaction Ви 2 cela 00 si 1,2 dibromo cyclohexane SY No reaction لهم No reaction cela

Table 3 Halogenation & Bromination Br2cely Brown coloured in the presence solution. of lighb n- Hexanel alkane inert No reaction, colour becomes lighter because of dilution Br Br. 2 cyclohexane - 3) Heach >>> 1,2-dibromocyclohexane solution becomes colourless HCZCH H. CH-BO BYCH Br By Decolurises Bren B% bromine Br ho H + L Benzere (sunlight very slow 4 C T (Trace only) - Does not decolourses Br2 No loss of aromaticöity Hz Br. NO reaction, Tolwene