The -OH group of the phenol is eliminated and Zn is oxidized to zinc oxide ( ZnO ) when benzene is prepared.
Yes. Phenol and Zn powder distillation reaction is oxidizing reducing reaction (redox reaction). Zn is oxidized to ZnO. The carbon atom which is connected to -OH, is reduced.
Phenols can be reduced by distillation with more reagents such as Hydrogen iodide (HI) and red phosphorus as zinc dust. But these methods are quite poor and are seldom feasible. Catalytic hydrogenation has also been used, but the corresponding cyclohexanol is a side product. So we cannot get clean product from these reagents.
There are differences in properties of phenol and benzene. That can used to identify phenol and benzene.
Here, we are going to consider about some reactions of benzene and phenol.
Phenol reacts with sodium metal and give hydrogen gas. But benzene does not react with sodium.
Phenol reacts with NaOH(aq), but benzene does not react with NaOH(aq).
Phenol gives 2,4,6-tribromophenol white precipitate with bromine liquid.
The carbon atom which is joint with -OH group is oxidized when benzene is given because that carbon atom is joint with a hydrogen atom.
Both phenol and benzene are liquids ar room temperature. But, the reagent zinc exist in solid state at room temperature.
Zinc oxide is white powder. On heating it is changed to yellow colour. When cooling back, again it takes white colour.
No, both phenol and benzene are liquid states at room temperature.