<p>Excess of KI reacts with&nbsp;<math xmlns="http://www.w3.org/1998/Math/MathML"><mi>C</mi><mi>u</mi><mi>S</mi><msub><mi>O</mi><mn>4</mn></msub></math>&nbsp;solution and then&nbsp;<math xmlns="http://www.w3.org/1998/Math/MathML"><mi>N</mi><msub><mi>a</mi><mn>2</mn></msub><msub><mi>S</mi><mn>2</mn></msub><msub><mi>O</mi><mn>3</mn></msub></math>&nbsp;solution is added to it. Which of the statement is incorrect in this reaction?</p>