Chemistry helpWatch this thread
1. Give the ionic equations for both reactions.
2. Describe the link between the number of chlorine and thiosulfate ions.
3. Calculate the volume of chlorine at RTP passed into the potassium iodide solution.
For 1, remember that chlorine displaces iodine in potassium iodide. The second reaction they are referring to is the iodine/thiosulfate titration.