When ozone reacts with an excess of potassium iodide solution buffered with a borate buffer (pH 9.2) iodine is liberated which can be titrated against a standard solution of sodium thiosulphate, this

Question

When ozone reacts with an excess of potassium iodide solution buffered with a borate buffer (pH 9.2) iodine is liberated which can be titrated against a standard solution of sodium thiosulphate, this is a quantitative method for estimating O3 gas. When liberated I2 and sodium thiosulphate will react, then product is/are :

Prashant Kotian · Accepted Answer

Correct answer: A. I2 + 2S2O3^2- -> 2I- + S4O6^2-

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