Reactions of acids

• Acids and Metal Oxides and Metal Hydroxides are Bases
• Metal oxides and metal hydroxides dissolve in water. These soluble compounds shall react with acids in neutralisation reactions
• Insoluble metal oxides and metal hydroxides will still take part in neutralisation reactions with acids
• Acid + Metal Oxide


  Salt + Water
• Acid + Metal Hydroxide


  Salt + Water
• The salt that's produced depends upon the acid and the cation in the oxide or hydroxide
• Hydrochloric acid + Copper oxide


  • Copper chloride + Water
• Sulfuric acid + Potassium hydroxide

  • Potassium sulfate + Water
• Nitric acid + Sodium hydroxide

  • Sodium nitrate + Water
• To work out the overall change of a compound reaction, you need to balance the changes of the reactants and products
• Acid + Metal Carbonate


  Salt + Water + Carbon Dioxide
• Hydrochloric acid + Sodium carbonate

  • Sodium chloride + Water + Carbon dioxide
• You can make soluble salts using an insoluble base
• Making soluble salts from insoluble base

  1. Pick the right acid and insoluble base

  2. Dilute the acid using a beaker

  3. Add the insoluble base to the acid bit by bit until no more reacts

  4. Filter out the salt solution

  5. Evaporate the water to get salt crystals
• The method and reactants used depend on the desired salt product