Calculate the mass of Na2S2O3•5H2O needed to prepare a 1.00-liter solution of 0.0700 M concentration. Write the net ionic balanced equation for the redox reaction of iodate and iodide in acidic medium forming iodine and water. This is the pre-titration reaction. Write the net ionic balanced equation of iodine and thiosulfate forming iodide and tetrathionate, S4O62-. This is the titration reaction. Write the overall balanced equation for reactions 2 and 3. What is the expected color at this endpoint? Write the balanced net ionic equation when ascorbic acid, C6H8O6, reacts with iodine to form dehydroascorbic acid, C6H6O6 and iodide in acidic medium. This is second pre-titration reaction for the analysis of Vitamin C.

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A: Below attached file showing the details answer  All the best.  Option C . +4  is correct option.

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A: ANSWER

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