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A green precipitate forms when dilute sodium hydroxide solution is added to a sample in solution. Identify the metal ion present in the original solution.
The solutions will become cloudy and change color due to the precipitation of metal hydroxides. Add 15M NH4OH with stirring to the same beaker or test tube. The precipitates will dissolve and darkly ...
Cations can be identified with flame tests or precipitate tests using sodium hydroxide and ammonia solutions ... or reaction with dilute acid. Some metal cations have distinctive colours when ...