If the colour is hard to distinguish what method can you use to distinguish between silver halide precipitates?
Add aqueous ammonia-first dilute then concentrated
7 of 10
What are the positive test oberservations for adding aqueous ammonia to silver halide precipitates?
Silver chloride- soluable in dilute ammonia. Silver bromide-soluable in concentrated ammonia only. Silver iodide-insoulable in dilute and concentrated ammonia
8 of 10
What is the method for testing for ammonium ions?
Add sodium hydroxide to the suspected ammonium compound and warm gently. Test any gas evolved with red litmus paper
9 of 10
What is the postive test observation for testing for ammonium ions?
Ammonia gas turns red litmus paper blue and has a distinctive smell. The gas is hazardous so test with care
10 of 10
Other cards in this set
Card 2
Front
What is the postive test observation for testing for a carbonate ion?
Back
Fizzing/colourless gas is produced which turns limewater cloudy
Card 3
Front
What is the method for testing for sulfate ions?
Back
Card 4
Front
What is the postive test observation for testing for sulfate ions?
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