How to make a salt using Metals, insoluble carbonates
Aim: To produce copper sulfate salts by reacting copper oxide with an acid.
Equipment:
- Copper oxide powder
- Dilute 1.0 mol sulfuric acid
- 50ml measuring cylinder
- Two 100ml beakers
- Bunsen Burner
- tripod
- gauze mat
- funnel
- filter paper
- thermometer spatula
- evaporating basin
- stirring rod
Method:
- Add 20ml of sulfuric acid to a 100ml beaker. Heat the acid until it reaches 70 degrees. Turn off your Bunsen burner. Do not boil acid.
- Once Heated use a spatula to add pea size portions of copper oxide to the beaker. Stir the mixture for 30 seconds.
- Repeat step 2 until no more will dissolve. Allow the beaker to cool.
- Fold the filter paper and place it in the funnel. Place the filter funnel into the second beaker
- Make sure the beaker is cool enough to hold at the top. The contents should still be hot. You may need your teacher to complete this steep.
- Gently swirl the contents of the beaker to mix, and then pour into the filter paper in the funnel. Allow to filter through.
- Rinse the beaker you used to heat the mixture previously, and place it back on top of your tripod filled with 50-60 ml of water.
- Place the evaporating basin on top of this beaker and carefully pour some of the solution form the other beaker into the evaporating basin.
- Gently heat the beaker until the solution in the evaporating basin has reduced by half.
- Leave the evaporating basin to cool. Once cool, move the evaporating basin to a warm place where it will not be disturbed and observe over the next few days.
Observation:
