QUALITATIVE ANALYSIS PROCEDURE: Place 1 ml of your unknown solution in a medium test tube. Add...
QUALITATIVE ANALYSIS PROCEDURE: Place 1 ml of your unknown solution in a medium test tube. Add 2 drops of 6 M HNO3, then 1 ml of 5 M NH4OH and stir. Centrifuge and decant the solution. Include the chemical equation for the positive test observed.
Homework Answers
If 2 drops of 6 M HNO3 and then 1 ml of 5 M NH4OH are added to the unknown solution. The resulting solution produce a white gelatinous precipitate after stirring.
Then it is centrifuged and decant the remaining solution.
The positive test of white gelatinous precipitate is due to the presence of Aluminium ions.
Al+3(aq) + 3NH4OH(aq) -----> Al(OH)3(s) + 3NH4+(aq)
white gelatinous precipitate
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QUALITATIVE ANALYSIS PROCEDURE: Place 1 ml of your unknown
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post lab questions?
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Question:
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