CH-1806
Oxidising and reducing agents
Chemistry · Secondary 4 · Medium · Oxidising and reducing agents
Aqueous potassium iodide and acidified potassium dichromate(VI) are each added to separate samples of solution Z.
• With aqueous potassium iodide, the solution turns from colourless to brown.
• With acidified potassium dichromate(VI), the orange colour remains.
What does this show about Z?
• With aqueous potassium iodide, the solution turns from colourless to brown.
• With acidified potassium dichromate(VI), the orange colour remains.
What does this show about Z?
- Z is only an oxidising agent.
- Z is only a reducing agent.
- Z is both an oxidising and a reducing agent.
- Z is neither an oxidising agent nor a reducing agent.
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