Heating Effect on Nitrate Salts

  1. All nitrates salts decompose when heated.
  2. Table below shows the products formed when different nitrate salts are heated.

Nitrate Salt Equation of The Reaction
Ammonium nitrate Ammonium nitrate decompose to nitrogen monoxide and water vapour when heated.
NH4NO3 → N2O + 2H2O
Potassium nitrate
Sodium nitrate
Potassium nitrate
2KNO3 → 2KNO2 + O2
Sodium nitrate
2NaNO3 → 2NaNO2 + O2
Calcium nitrate
Magnesium nitrate
Aluminium nitrate
Zink nitrate
Iron (III) nitrate
Lead(II) nitrate
Copper(II) nitrate
Magnesium nitrate
2Mg(NO3)2 → 2MgO + 4NO2 O2
Iron(III) nitrate
4Fe(NO3)3 → 2Fe2O3 + 12NO2 + 3O2
Lead(II) nitrate
2Pb(NO3)2 → 2PbO + 4NO2 O2
Mercury(II) nitrate
Silver(I) nitrate
Aurum(II) nitrate
Silver nitrate
2AgNO3 → 2Ag + 2NO2 + O2


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