Potassium Chlorate Lab
Posted by Jim Clark on 1st June and posted in Laboratory
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 oxygen (O). It melts at 368°C and decomposes at 400°C into the solid compound, potassium chloride (KCl), with molecular oxygen (O2) driven off.
potassium chlorate potassium chloride + oxygen
KClOX => KCl + O2
Manganese dioxide is used as a catalyst in order to lower the energy of activation for the decomposition of potassium chlorate. The mass of the catalyst remains constant throughout the experiment.
Caution: Extreme caution must be used with potassium chlorate during handling and heating. Students who do not hear the lecture on safety precautions will have to get the lecture from the teacher at another time before they are permitted to do this experiment.
Procedure: Follow the procedure given in the paper, “Potassium Chlorate Lab Safety Precautions
| Data (must be to two decimal places) | trial 1 | trial 2 |
|
||
|
||
|
||
| RESULTS | ||
| mass of KClOX added | ||
| mass of oxygen lost upon heating | ||
| atomic mass of oxygen | ||
| moles of oxygen (O) atoms | ||
| mass of KCl residue | ||
| molecular mass of KCl | ||
| moles of KCl | ||
| ratio of moles of O to moles of KCl | : 1.00 | : 1.00 |
| simplest formula for potassium chlorate | ||
| balanced equation for the reaction (trial 1) | ||
| balanced equation for the reaction (trial 2) | ||
Show calculation of moles of oxygen
atoms and moles of KCl molecules.Show calculation of simplest whole
number ratio of O atoms to KCl molecules.As soon as possible, insert your data from these trials into the class spreadsheet. This data will be needed by the class for later assignments. If the class is unable to analyze your data, you will not get full credit for your work.
Related posts:
- 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...
- Potassium Chlorate Lab Safety Precautions 1. Work area, safety goggles Clean your work area thoroughly, put away all books and papers, and wear safety glasses. These will minimize the possibility...
- Magnesium Oxide Lab 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)...
- 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)...
- The Mole Lecture Lab 1. Select a kit containing six rubber stoppers, three small and three large. Do not mix your kit with stoppers from other kits. 2. Determine...
