Magnesium Oxide Lab
Posted by Jim Clark on 2nd June and posted in Laboratory
A. Objective: Determine the chemical formula of magnesium oxide (MgXOY) by experiment using the mole concept.
B. The Experiment: Run a reaction between magnesium (Mg) and oxygen (O2) by heating magnesium in a crucible with the cover partially ajar. Use a 20 cm. strip for trial 1 and a 25 cm strip for trial 2. As in the hydrate labs, the empty crucible should be heated to dryness and allowed to cool before beginning.
C. The Data: Collect the following data:
| trial 1 | trial 2 | |
| mass of crucible and cover before reaction | ||
| mass of crucible, cover, Mg, before reaction | ||
| mass of crucible, cover, MgXOY after reaction |
Remember to repeat the entire experiment (trial 2) with 25 cm of Mg ribbon
D The Results
| trial 1 | trial 2 | |
| mass of magnesium | ||
| mass of oxygen | ||
| mass of magnesium oxide | ||
| moles of magnesium (Mg) | ||
| moles of oxygen molecules (O2) | ||
| moles of oxygen atoms (O) | ||
| ratio of moles of O atoms to moles of Mg atoms | ||
| formula of magnesium oxide (from above ratio of moles of O to moles of Mg atoms) | ||
| MW of magnesium oxide (from formula above) | ||
| moles of magnesium oxide (from mass and MW) | ||
| balanced equation for reaction 1 | ||
| balanced equation for reaction 1 | ||
E. The Spreadsheet: Insert your data, as soon as possible in the class spreadsheet. Your teacher will furnish you with a copy of the class data for further analysis. If your data does not make the spreadsheet, it will be of no use to rest of the class and you will not receive full credit for your work.
Related posts:
- Magnesium Oxide Laboratory Sheet A. Objective: Determine the chemical formula of magnesium oxide (MgXOY) by experiment using the mole concept. B. The Experiment: Run a reaction between magnesium (Mg)...
- Potassium Chlorate Lab Objective: To determine the number of oxygen atoms in a potassium chlorate molecule. Potassium chlorate is a compound composed of potassium (K), chlorine (Cl), and...
- Potassium Chlorate Laboratory Sheet Objective: To determine the number of oxygen atoms in a potassium chlorate molecule. Potassium chlorate is a compound composed of potassium (K), chlorine (Cl), and...
- Water Oxide Oh, Oh, What the Shift of a Proton Can Do Hydrogen peroxide, H2O2, (in a dilute aqueous solution) is a familiar inhabitant of the medicine cabinet, but there is another more elusive molecule, water oxide,...
- Chemical Reaction of Rusting Rusting is an easy to recognize chemical reaction, as the nice shiny metal turns into an ugly red/brown flaky substance. It happens spontaneously in moist...
