Honors Chemistry Pressure and Temperature Dalton’s Law

1. Honors ChemistryPressure and TemperatureDalton’s Law

2. Practice • Express 2.0 atmospheres in torr. • 1520 torr • Express 345 torr in atmospheres and kPa. • 0.454 atm • 46.0 kPa

3. Temperature • Convert to Kelvin: • 100oC • 45oC • -123oC • Convert to Celsius: • 13 K • 273 K (Standard Temperature) • 298 K (room temperature)

4. Barometers

5. Manometers

6. 3 Manometers… analyze each • If h1, h2, and h3 are equal to 50 mm Hg, what is Pgas? • Assume that Patm = 760 mm Hg (standard pressure)

7. Practice Problem • Three of the primary components of air are carbon dioxide, nitrogen, and oxygen. In a sample containing a mixture of only these gases at exactly 1 atm, the partial pressures of carbon dioxide and nitrogen are given as PCO2 = 0.285 torr and PN2 = 593.525 torr. What is the partial pressure of oxygen?

8. Practice Problem • Three of the primary components of air are carbon dioxide, nitrogen, and oxygen. In a sample containing a mixture of only these gases at exactly 1 atm, the partial pressures of carbon dioxide and nitrogen are given as PCO2 = 0.285 torr and PN2 = 593.525 torr. What is the partial pressure of oxygen? • PO2 = 164.190 torr

9. Gas Collection

10. Practice Problem • Oxygen gas from the decomposition of potassium chlorate, KClO3, was collected by water displacement. The barometric pressure and the temperature during the experiment were 731.0 torr and 20.0oC, respectively. What was the partial pressure of the oxygen collected?

11. Practice Problem • Oxygen gas from the decomposition of potassium chlorate, KClO3, was collected by water displacement. The barometric pressure and the temperature during the experiment were 731.0 torr and 20.0oC, respectively. What was the partial pressure of the oxygen collected? • 713.5 torr