Lab #2 Water Hydration of Copper(II) Sulfate. Purpose- To determine the formula of the hydrate from the anhydrous compound.
Lab #2 Water Hydration of Copper(II) Sulfate
Purpose- To determine the formula of the hydrate from the anhydrous compound.
Materials-
Triple beam balance
Gas Burner
Crucible and cover
Iron ring and stand
Spatula
Crucible tongs
Clay triangle
Wire gauze
Copper(II) sulfate, hydrated crystals, 5g
Distilled water
Variables-
Independent- Temperature, amount of time heated
Dependent- Mass of the crucible with Cu(II) SO4
Control- Crucible
Procedure-
- Set up the iron ring stand with the clay triangle and gas burner below it.
- Place the crucible with the cover slightly tipped on the clay triangle so that gas can escape.
- Heat the crucible for about five minutes to fully sanitize it.
- Stop heating and remove the crucible from the clay triangle onto the wire gauze and allow it to cool for about five minutes.
- Place the crucible on the balance to find its mass. Record this data.
- Add the copper (II) sulfate into the crucible using the spatula.
- Place the crucible with the hydrate onto the clay triangle and begin to heat it for about five minutes. Record any observations.
- Remove the crucible and transfer it to the wire gauze so that it can cool for two minutes.
- After it has finished cooling place it on the balance and record the mass.
- Place the crucible back onto the clay triangle and heat again for five minutes.
- Remove the crucible with tongs and let it cool for two minutes.
- Check the mass and if it is the same as the first time you are done. If not, repeat the heating, cooling, and massing until it is consistent.
- Add a few drops of water and record any observations.