Add 3M or 6M NH4OH drop wise while stirring with the stir rod to one beaker or test tube of each pair. The solutions will become cloudy and change color due to the precipitation of metal hydroxides.
To suspend, use wire through a small hole in the metal sheet and twist around a stir rod spanning the top of the beaker. Fill the beaker to the top of the tree with 0.2 M Ag(NO3). Start the demo at ...
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