Making Soluble Salts

• Making Salts Method:

  • add a fixed volume of dilute acid to a beaker and warm
  • add small amounts of insoluble base and stir
  • continue adding until in excess
  • filter using filtration
  • place in evaporating basin and heat gently until crystals start to form
  • leave for 24 hours
  • scrape crystals onto paper towel and pat dry
• Salts contain a positive ion and a negative ion.
• Hydrochloric acid makes chloride salts.
• Sulfuric acid produces sulfate salts.
• Nitric acid produces nitrate salts.
• The acid is warmed to speed up thereaction.
• The insoluble base is added in excess to make sure all of the acid reacts.
• The mixture must be filtered to remove excess insoluble base.
• The solution is heated to evaporate the water.
• The solution can be heated gently by using an electric heater or a boiling water bath.
• Copper metal cannot be reacted with dilute sulfuric acid to produce copper sulfate because copper is not reactive enough.
• The limiting reactant in the making salts experiment is the acid.
• The reaction between a metal oxide and an acid is a neutralisation reaction.