Fertilizer

• Artificial fertilizers contain NPK:

  1. Nitrogen for chlorophyll and other proteins.
  2. Phosphorus for root growth and crop ripening
  3. Potassium for making proteins and to resist diseases.
• Reaction with any alkali substance (except ammonia) displaces ammonia from its compound, for example:

  Calcium hydroxide + ammonium chloride→ Calcium chloride + Ammonia + Water