Water - Solubility - Ions
Negative Ions - Nitrate.
Add sodium hydroxide
solution and aluminium
to the solution containing the nitrate ions.
The aluminium reduces the nitrate ion
to an ammonium ion (NH4+).
The ammonium ion reacts with hydroxide
to produce ammonia gas and water (see alkalis).
ammonium + hydroxide
ammonia + water
NH4+(aq) + OH-(aq) NH3(g) + H2O(l)
Ammonia gas can be identified with the usual test.
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