an experiment to determine the number of moles of dry oxygen formed, potassium chlorate decomposes to form oxygen gas and potassium chloride. 2KClO3 (s) → 2KCl (s) + 3O2 (g) The evolved
n an experiment to determine the number of moles of dry oxygen formed, potassium chlorate decomposes to form oxygen gas and potassium chloride.
2KClO3 (s) → 2KCl (s) + 3O2 (g)
The evolved oxygen is collected over water. The relevant data from the experiment is summarized below.
| Initial volume reading | 31.0 mL |
| Final volume reading | 58.2 mL |
| Temperature | 23.0°C |
| Total pressure | 765 mm Hg |
A table of vapor pressures of water is also available:
| Temperature (°C) | Vapor Pressure of Water (mm Hg) |
| 21 | 18.7 |
| 22 | 19.8 |
| 23 | 21.1 |
| 24 | 22.4 |
| 25 | 23.8 |
What is the volume (in mL) of O2 gas formed in the experiment?
What is the volume (in L) of O2 gas formed in the experiment?
What is the vapor pressure of water (in mm Hg) at the experiment temperature?
What is the dry pressure (in mm Hg) of O2 gas in the experiment?
What is the dry pressure (in atm) of O2 gas in the experiment?
What is the temperature (in K) for the experiment?
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