1. Unit 20 Oxidation and reduction Activity 20.2 Investigating redox reactions of aqueous chlorine Reference in textbook: Section 20.14 S

2. Unit 20Oxidation and reduction Activity 20.2 Investigating redox reactions of aqueous chlorine (S) Observations A Reaction of aqueous chlorine with halide solutions 11Complete the following table.

3. Unit 20Oxidation and reduction Activity 20.2 Investigating redox reactions of aqueous chlorine (S) B Reaction of aqueous chlorine with dilute sodium hydroxide solution 12pH of dilute sodium hydroxide solution = _______________ pH of reaction mixture = _______________

4. Unit 20Oxidation and reduction Activity 20.2 Investigating redox reactions of aqueous chlorine (S) Discussion 13a)What happens to the bromide ions when aqueous chlorine reacts with potassium bromide solution? _______________________________________________________ b) What happens to the iodide ions when aqueous chlorine reacts with potassium iodide solution? _______________________________________________________ c) What happens to the aqueous chlorine when it reacts with the halide solutions? _______________________________________________________ d) Aqueous chlorine acts as a / an ______________ agent when it reacts with the halide solutions. Bromide ions are oxidized to bromine. Iodide ions are oxidized to iodine. Aqueous chlorine is reduced to chloride ions. oxidizing

5. Unit 20Oxidation and reduction Activity 20.2 Investigating redox reactions of aqueous chlorine (S) 14a)What products are formed when aqueous chlorine reacts with dilute sodium hydroxide solution? __________________________________________________________________ b) Is aqueous chlorine reduced or oxidized in the reaction? __________________________________________________________________ Sodium chloride and sodium hypochlorite Aqueous chlorine is simultaneously reduced and oxidized.

6. Unit 20Oxidation and reduction Activity 20.2 Investigating redox reactions of aqueous chlorine (S) Conclusion 15Chlorine is a strong oxidizing agent. It can oxidize ___________ ions and ___________ ions to give ___________ and ___________ respectively. 16When aqueous chlorine reacts with dilute sodium hydroxide solution, it is simultaneously ___________ and ___________. bromide bromineiodideiodine reducedoxidized

7. Unit 20Oxidation and reduction Activity 20.2 Investigating redox reactions of aqueous chlorine (S) Question 17Write an ionic equation for each of the following reactions.