To about 1 mL of 0.1 M silver nitrate, AgNO3, solution in a test
tube add about 1 mL of dilute HCl and mix. Record your observations.
Centrifuge and separate the precipitate from the solution.
Discard the solution.
Add about 2 mL of distilled water and stir to wash the precipitate. Centrifuge
and separate the precipitate from the solution. Discard the solution.
Add a few drops of concentrated ammonium hydroxide, NH4OH, (located
in the fume hood) to the precipitate and stir. Continue adding the NH4OH
drop-wise and stirring until all the precipitate dissolves. (Less
than 20 drops should be required). Record your observations.
add dilute nitric acid, HNO3, until the solution is acidic
by placing a small drop of the test tube solution on the blue litmus
paper. If the blue litmus paper turns pink the test tube solution is
should notice that a white precipitate in the test tube.
The white precipitate is silver chloride, AgCl, which confirms the presence
of Ag+ ions. Record your observations.