Making salts rq

• What is the first step in making soluble salts?

  Start with a fixed volume of dilute sulfuric acid in a beaker
• What should you do after placing the beaker on a tripod?

  Gently heat with a Bunsen burner on a heatproof mat until almost boiling
• What should you do after heating the sulfuric acid?

  Add a small amount of copper oxide to the acid using a spatula
• What happens when copper oxide is added to the sulfuric acid?

  Copper oxide will react and seem to disappear
• What indicates that the reaction between copper oxide and sulfuric acid has stopped?

  When powder remains at the bottom of the beaker
• What is the next step after the reaction has stopped?

  Use filtration to remove the unreacted copper oxide
• What should you do with the solution after filtration?


  Place it into an evaporating basin and heat gently
• Why is it necessary to leave the solution for 24 hours in a cool place?

  To allow crystals to form
• What should you do after the crystals have formed?

  Scrape the crystals onto a paper towel and gently pat them dry
• What is the overall process of making soluble salts from dilute sulfuric acid and copper oxide?

  1. Start with dilute sulfuric acid in a beaker.
  2. Heat until almost boiling.
  3. Add copper oxide and stir.
  4. Continue adding until powder remains.
  5. Filter out unreacted copper oxide.
  6. Heat the solution in an evaporating basin.
  7. Leave for 24 hours for crystals to form.
  8. Scrape and dry the crystals.