Thiosulfate is used to consume iodine generated when chlorine reacts with iodide…

CHEMISTRY · Single correct · AP · Chemistry · Chemical Reactions · Chemical Reactions

Problem

Thiosulfate is used to consume iodine generated when chlorine reacts with iodide according to the steps below. Step 1: Cl₂(aq) + 2 I⁻(aq) → I₂(aq) + 2 Cl⁻(aq) Step 2: I₂(aq) + 2 S₂O₃²⁻(aq) → 2 I⁻(aq) + S₄O₆²⁻(aq) What is the overall net ionic equation for the combined process? (a) Cl2(aq)+2S2O32−(aq)→S4O62−(aq)Cl_2(aq)+2S_2O_3^{2-}(aq)\rightarrow S_4O_6^{2-}(aq) (b) Cl2(aq)+2S2O32−(aq)→2Cl−(aq)+S4O62−(aq)Cl_2(aq)+2S_2O_3^{2-}(aq)\rightarrow 2Cl^{-}(aq)+S_4O_6^{2-}(aq) (c) Cl2(aq)+2I−(aq)+2S2O32−(aq)→2Cl−(aq)+S4O62−(aq)Cl_2(aq)+2I^{-}(aq)+2S_2O_3^{2-}(aq)\rightarrow 2Cl^{-}(aq)+S_4O_6^{2-}(aq) (d) Cl2(aq)+4S2O32−(aq)→2Cl−(aq)+2S4O62−(aq)Cl_2(aq)+4S_2O_3^{2-}(aq)\rightarrow 2Cl^{-}(aq)+2S_4O_6^{2-}(aq)

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