Precipitation in Chemical Changes

Precipitation in Chemical Changes

Credit: CCAlive!
 
Author: Claire Liu
Description:

Adding very pale yellow sodium iodide to colorless lead(II) nitrate produces a yellow precipitate.

Usage:
No Description available
 
Futher Images
tn_precipitation-in-che-15-p1-120.jpg tn_precipitation-in-che-15-p2-120.jpg tn_precipitation-in-che-15-p3-120.jpg tn_precipitation-in-che-15-p4-120.jpg  
Credits, from left: CCAlive!, CCAlive!, CCAlive!, CCAlive!
 
Safety:
No Description available
 
Equipment:
No Description available
 
Materials:

Solution A: 0.5 M sodium iodide
Solution B: 0.2 M lead(II) nitrate
 
Procedure:

Adding sodium iodide to colorless lead(II) nitrate.
 
Notes:

Solution A: 0.5 M sodium iodide (very pale yellow)
Solution B: 0.2 M lead(II) nitrate (colorless)
Precipitate: (yellow)
Pb(NO3)2(aq) + 2 NaI(aq) --> PbI2(s) + 2 NaNO3(aq)
 
Disposal:
No Description available
 
Difficulty:Some laboratory experience required
Preparation Time:  minutes Demonstration Time: 1 minutes
Availability of Materials:Not specified Cost of materials:$ 
Last Updated:Fri 01 Apr 2011 17:05:51 EDT Viewed:66166 times viewed
Source:UW-madison chemistry department; JCE CC Alive!, UW card catalog