other

• Preparing a dry solid sample of copper sulfate

  1. Measure sulfuric acid

  2. Heat the acid

  3. Add copper oxide

  4. Stir to react

  5. Filter to remove excess copper oxide

  6. Evaporate to get dry crystals
• Neutralization


  Reaction of an acid with a base to form a salt
• Base


  Any material that will neutralize an acid and form a salt (not just alkalis)
• Copper oxide


  • A solid base used to neutralize the sulfuric acid
• Excess


  Adding more of a reactant than is needed to complete the reaction
• Filtering


  Separating the insoluble copper oxide from the soluble copper sulfate solution
• Evaporation


  Heating the copper sulfate solution to remove the water and obtain dry crystals
• Copper sulfate crystals have a tendency to break down if heated too much, releasing unpleasant gases
• Heating the copper sulfate solution over a steam bath is a gentler way to evaporate the water
• The final product is a sample of pure dry copper sulfate crystals