Reversible reaction: dehydration of blue copper sulfate

• What is the hydrated form of copper sulfate called?

  Blue copper sulfate
• What does it mean for blue copper sulfate to be hydrated?


  It means that copper and sulfate ions are surrounded by water molecules
• What happens to blue copper sulfate when it is heated?


  It produces anhydrous copper sulfate, which is a white solid
• What is the state of anhydrous copper sulfate?


  It is a white solid
• Why is the reaction of anhydrous copper sulfate with water considered reversible?


  Because it can convert back to blue hydrated copper sulfate when water is present
• What type of reaction occurs when anhydrous copper sulfate absorbs water?


  It is an endothermic reaction
• What does it mean for a reaction to be endothermic?


  It means that the reaction takes in heat energy
• What must the reverse reaction of anhydrous copper sulfate be, given that the forward reaction is endothermic?


  The reverse reaction must be exothermic
• What happens to anhydrous copper sulfate when water is present?


  It converts back to blue hydrated copper sulfate
• Chemical symbol for anhydrous copper sulfate:

  CuSO4
• Chemical symbol for hydrated copper sulfate

  CuSO4.5Н20
• What is the label for the blue substance?


  Hydrated copper sulfate

  
• What is the name of the substance?

  Anhydrous copper sulfate

  
• What is the reaction of the green label?


  Endothermic

  
• What is the reaction of the blue label?


  Exothermic

  
• What is the extra product formed?

  5H2O