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Q. What test could you perform to detect the presence of I‾ ion? PLEASE, use clear...

Q. What test could you perform to detect the presence of I‾ ion?

PLEASE, use clear hand-writing*

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Answer #1

Halide ions in solutions are detected using silver nitrate solutions. The test solution is acidified using a few drops of dilute nitric acid, and then a few drops of silver nitrate solution are added. Different coloured silver halide precipitates form, depending on the halide ions present:

  • chloride ions give a white precipitate of silver chloride
  • bromide ions give a cream precipitate of silver bromide
  • iodide ions give a yellow precipitate of silver iodide
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