1) it has high dielectric constant2) Also AlCl3 can interact with the nitrobenzne to form complex C6H5NO2.AlCl3 which is soluble in excess nitrobenzene hence a good solvent....
It is not used up as it is a substance that the reactants can stick to, so there are more successful collisions (collision theory), increasing the rate of reaction; as opposed to reacting with the...