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Reaction of Potassium Iodide Crystal With Lead Nitrate: Microscale Movie

A crystal of potassium iodide is carefully combined with a solution of lead(II) nitrate under a microscope.

Discussion

A crystal of potassium iodide (KI) is placed on a slide containing a drop of a 1.0M solution of lead(II) nitrate, Pb(NO3)2. The crystal is pushed into the solution with a small stylus. The reaction forms the bright yellow precipitate lead(II) iodide, PbI2. The reaction was filmed with a magnification of 30X.






Credits:
Design
  James H. Maynard University of Wisconsin - Madison, Madison, WI 53706
Demonstration
  Julie Lynn Harris University of Wisconsin - Madison, Madison, WI 53706
Photographic Production
  Jerrold J. Jacobsen University of Wisconsin - Madison, Madison, WI 53706
Text
  James H. Maynard
  Rachel Bain University of Wisconsin - Madison, Madison, WI 53706
Microscope Lab Support
  Ilia Guzei Crystallography Laboratory, University of Wisconsin - Madison, Madison, WI 53706