Sodium thiosulfate, Na2S2O3, is used as a "fixer" in black and white photography. Identify the reducing agent in the reaction of thiosulfate with iodine. 2S₂O₃²⁻(aq) _ I₂(aq) → S₄O₆²⁻(aq) + 2I⁻(aq)

Sodium thiosulfate, Na2S2O3, is used as a "fixer" in black and white photography. Identify the reducing agent in the reaction of thiosulfate with iodine. 2S₂O₃²⁻(aq) _ I₂(aq) → S₄O₆²⁻(aq) + 2I⁻(aq)

Sodium thiosulfate, Na2S2O3, is used as a "fixer" in black and white photography.
Identify the reducing agent in the reaction of thiosulfate with iodine.
2S₂O₃²⁻(aq) _ I₂(aq) → S₄O₆²⁻(aq) + 2I⁻(aq)


A) I₂(aq)


B) I⁻(aq)


C) S₂O₃²⁻(aq)


D) S₄O₆²⁻(aq)


E) S₂O₃²⁻(aq) and I⁻(aq)



Answer: C


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