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Chemistry: Redox - Coggle Diagram

- - - - Test 1 ( for gases)
        
        paper turns from purple to colorless
        
        MnO4- is reduced to Mn2+. O.S. of manganese decreases from +7 to +2
        
        place piece of filter paper soaked with acidified KMnO4 at mouth of test tube
      - Test 2 (for solutions)
        
        Color of KMnO4 soln changes from purple to colorless
        
        MnO4- is reduced to Mn2+. O.S. of manganese decreases from +7 to +2
        
        Add acidified KMnO4 to unknown soln
  - - - Test 1
        
        Brown solution is formed
        
        Add aq KI to unknown soln
        
        Iodide ions are oxidized to iodine by oxidizing agent (2I-(aq) --> I2(aq)+ 2e- )
      - Test 2
        
        Paper turns from white to blue
        
        Dip a piece of starch iodide paper in the unknown soln
        
        Iodide ions are oxidized to iodine by oxidizing agent. Iodine then reacts with starch to form blue