Making soluble salt (required practical)

Question 1

why cant you make copper sulfate by reacting copper and sulfuric acid

Answer 1

copper is not the reactive enough for copper to take place

Question 1

what are the steps needed to make the copper sulfate liquid and after into the soluble salt (Part 1)

Answer 1

1. start with a fixed amount of dilute sulfuric acid which is our limiting reactant (acid will run out)
2. gently heat the acid until almost boiling
3. using a spatula add a small amount of copper oxide to the acid
4. stir the solution using a glass rod
5. the copper oxide will react and seem to disappear the solution will turn a blue color with is a color of copper sulfate
6. continue to add copper oxide if the solution continues to be clear blue and stir the solution
7. stop adding copper oxide if some of the powder remains after stirring
8. at this point the reaction has stopped and all of the acid has reacted
9. filtration to remove the un reacted copper oxide

Question 2

what are the steps to make with copper sulfate into crystals (part 2)

Answer 2

1. place the solution in an evaporating basin and heat gently over a beaker of boiling water
2. heat until half of the solution is evaporated
3. leave the solution for 24 hours in a cool pace for crystals to form
4. scrape crystals onto paper towel and gently pat dry

Question 3

how do you filter something and what does it remove

Answer 3

large, insoluble particles from a liquid e.g. sand from water

use filter paper and a funnel under a conical flask and put water through filter paper

Question 4

what is distillation

Answer 4

involves condensing the evaporated solvent and collecting it.

Question 5

what is fractional distillation

Answer 5

can separate liquids due to their different boiling point