C6H6 is a reducing agent, Cl2 is an oxidizing agent.
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Reactants:
C6H6 – Benzene
Other names: Benzol (historic/German), Cyclohexa-1, 3
Appearance: Colorless liquid ; Colourless liquid with characteristic odour ; Colorless to light-yellow liquid with an aromatic odor. [Note: A solid below 42°F.]
Cl2
Names: Chlorine, Molecular chlorine
Appearance: Greenish-yellow compressed liquefied gas with pungent odour ; Greenish-yellow gas with a pungent, irritating odor. [Note: Shipped as a liquefied compressed gas.]
Products:
C6H5Cl – Chlorobenzene
Other names: Benzene chloride, Monochlorobenzene, Phenyl chloride
Appearance: Colorless liquid ; Colourless liquid with characteristic odour ; Colorless liquid with an almond-like odor.
HCl – Chlorane, Hydrogen chloride
Other names: Hydrochloric acid, M, Uriatic acid
Appearance: Colorless, transparent liquid, fumes in air if concentrated ; Colorless gas ; Colourless compressed liquefied gas with pungent odour ; Colorless to slightly yellow gas with a pungent, irritating odor. [Note: Shipped as a liquefied compressed gas.]