gcsescience.com                                                 23                                                 gcsescience.com

Water - Solubility - Ions

Negative Ions - Nitrate.

Add sodium hydroxide solution and aluminium powder
to the solution containing the nitrate ions.

The aluminium reduces the nitrate ion (NO3-)
to an ammonium ion (NH4+).
The ammonium ion reacts with hydroxide
to produce ammonia gas and water (see alkalis).

ammonium  +  hydroxide    ammonia + water
(aq)     +     OH-(aq)      NH3(g)  +  H2O(l)

Ammonia gas can be identified with the usual test.

back         Links         Water         Revision Questions         next

gcsescience.com      The Periodic Table      Index      Water Quiz      gcsescience.com

Home      GCSE Chemistry      GCSE Physics

Copyright © 2015 Dr. Colin France. All Rights Reserved.