Kinetic-Molecular-Theory-of-Gas_Assignment.pptx

kinetic molecular theory of gas

1. KINETIC MOLECULAR THEORY (KMT) BEHAVIOR OF GASES

2. Kinetic Molecular Theory of Gases: 1. A gas consists of very small particles. 2. The particles are in constant, random, straight-line motion. 3. The molecules of a gas are very far from each other. 4. There are no forces of attraction or repulsion between molecules. 5. Molecules collide with each other and with the walls of the container. 6. All collisions are perfectly elastic.

3. Properties of Gases: Mass Volume Temperature Pressure

4. Mass of Gas The amount of gas (mass) is expressed in moles or grams. The amount of gases is negligible.

5. Volume of Gas The amount of space occupied by the gases The common units used are L and mL

6. Temperature - The temperature of a gas is proportional to the average kinetic energy of its molecule. - The hotness or coldness of the body

7. Temperature Degree Celsius ( ℃) Degree Fahrenheit ( °F) Kelvin (K)

8. Pressure - The pressure of a confined gas is the average effect of the colliding molecules.

9. Pressure Units used: atm torr psi cm Hg mm Hg Pa

10. ASSIGNMENT Directions: For the mass-mole/mole-mass and temperature conversions show the process of conversion or the solution. For the volume and pressure conversions you may or may not show the process of conversion or the solution.

11. ASSIGNMENT: Conversion of Units   1. How many moles are present in 7.05 g of hydrogen gas (H 2 )? 2. How many grams are present in 0.66 moles of oxygen gas (O 2­ )? 3. How many grams exist in 4.78 mol of water (H 2 O)? 4. How many grams exist in 0.49 mol of water (H 2 O)? 5. How many moles are present in 3.89 g of carbon dioxide (CO 2 )?

12. ASSIGNMENT: 6. 645 L = ____________________ pt 7. ___________________ Liters = 3783 mL 8. 79 L = ____________________ cm 3 9. 5 gal = ____________________ L 10. ___________________ gal = 10 qt

13. ASSIGNMENT: 11. 37 ℃ = ______________°F 12. 68 ℃ = ______________ K 13. 118 ℃ = _____________ K 14. 350 K = _____________ °F 15. 32 °F = ______________ K

14. ASSIGNMENT: 16. 3 atm = ___________cm Hg 17. ___________ torr = 21.5724 psi 18. 880 torr = _____________Pa 19. 112 mm Hg = ____________ atm 20. ______________ psi = 6.5 atm