Question 11 of 18 (1 point) One way to determine the concentration of hypochlori

Question

Question 11 of 18 (1 point) One way to determine the concentration of hypochlorite ions (CIO ) in solution is by first reacting them with ions. Under acidic conditions the products of this reaction are 12 and Cions. Then the lz produced in the first reaction is titrated with a solution of thiosulfate ions (S203. The products of the sitration reaction are S406 and ions Write net ionic equations for these two reactions Write the first one in the upper box. Do not include phases Tip: Plus signs () can be Typwed from the keyboard. Reacion amows found in the Toals menu ta move the cursor out of a superscript ar subs af ine answer modula. Use the let and night amow keys cript in the modulk

Explanation / Answer

First step, ClO- reacts with I- in acidic solution,

Net ionic equation : ClO- + 2I- + 2H+ ---> Cl- + I2 + H2O

Second step : I- reacts with Na2S2O3,

Net ionic equation : 2S2O3^2- + I2 ---> S4O6^2- + 2I-

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