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One characteristic of oxidising agents is that they 1 decolourise acidified potassium permanganate (VII) 2 change the colour of the dichromate ion form orange to green 3 liberate iodine from acidified aqueous potassium iodide 4 liberate oxygen from oxygen-containing compounds 1 2 3 4

One characteristic of oxidising agents is that they\newline11 decolourise acidified potassium permanganate (VII)\newline22 change the colour of the dichromate ion form orange to green\newline33 liberate iodine from acidified aqueous potassium iodide\newline44 liberate oxygen from oxygen-containing compounds\newline11\newline22\newline33\newline44

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Q. One characteristic of oxidising agents is that they\newline11 decolourise acidified potassium permanganate (VII)\newline22 change the colour of the dichromate ion form orange to green\newline33 liberate iodine from acidified aqueous potassium iodide\newline44 liberate oxygen from oxygen-containing compounds\newline11\newline22\newline33\newline44
  1. Identify oxidising agents: Look at option 11, does decolourising acidified potassium permanganate (VII) indicate an oxidising agent?\newlineYes, because oxidising agents take electrons from other substances, and potassium permanganate (VII) is a common oxidising agent that loses its purple color when it is reduced.
  2. Color change of dichromate ion: Check option 22, does changing the colour of the dichromate ion from orange to green indicate an oxidising agent?\newlineYes, because the dichromate ion (Cr2O72−\text{Cr}_2\text{O}_7^{2-}) in an acidic solution is orange and turns green when it is reduced, indicating it has acted as an oxidising agent.
  3. Liberation of iodine from potassium iodide: Consider option 33, do oxidising agents liberate iodine from acidified aqueous potassium iodide?\newlineYes, an oxidising agent can oxidise iodide ions (I−\text{I}^-) to iodine (I2\text{I}_2), which is a characteristic of an oxidising agent.
  4. Oxygen liberation from compounds: Evaluate option 44, do oxidising agents liberate oxygen from oxygen-containing compounds?\newlineThis is not typically a characteristic of oxidising agents; they usually accept electrons and do not necessarily liberate oxygen from compounds.

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