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Review Drill & Stoichiometry Test

Chm II Drill: Calculate the mass of (NH 4 ) 2 SO 4 in m g produced when 1.12 mL NH 3 gas reacts is excess H 2 SO 4 in the following rxn: NH 3 + H 2 SO 4  (NH 4 ) 2 SO 4. Review Drill & Stoichiometry Test. Water of Crystalization Lab Due Tomorrow. Chm II Homework. Review PP-11

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Review Drill & Stoichiometry Test

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  1. Chm II Drill: Calculate the mass of (NH4)2SO4 in mg produced when 1.12 mL NH3 gas reacts is excess H2SO4 in the following rxn:NH3 + H2SO4 (NH4)2SO4

  2. Review Drill & Stoichiometry Test

  3. Water of Crystalization Lab Due Tomorrow

  4. Chm II Homework • Review PP-11 • Complete the worksheet attached to the Poly website.

  5. Are there any questions on previous material?

  6. Kinetic Theory

  7. All matter is made up of tiny particles • The particles are in constant motion • All collisions are elastic

  8. Pressure

  9. Force per unit area • Caused by collisions against a surface • Gas measured in pressure

  10. Units of Pressure • kPa: kilopascal (Std Unit) • Pascal: newton/sq. meter • Atmosphere (Atm): • mm Hg:

  11. Standard Pressure • 101.3 kPa (to be changed) • 1.00 Atm • 760 mm Hg or Torrs • 30.0 inches Hg • 1013 millibars

  12. Gas Laws

  13. State the Following Laws • Boyle’s Law • Charles’ Law • Gay Lussac’s Law • Dalton’s Law • Graham’s Law

  14. Boyle’s Law

  15. The pressure & volume of a gas at constant temperature are inversely proportioned P1V1 = P2V2 = K

  16. Charles’ Law

  17. The volume and temperature of a gas at constant pressure are directly proportioned V1 V2 T1 T2 = = K

  18. Guy Lussac’s Law

  19. The pressure and temp. of a gas at constant volume are directly proportioned P1 P2 T1 T2 = = K

  20. Combined Gas Law

  21. Combination of the three formulas P1V1 P2V2 T1 T2 =

  22. Common Sense

  23. A gas’s volume is directly proportioned to its number of moles V1 V2 n1 n2 = = K

  24. New Combination P1V1/n1T1 = P2V2/n2T2 = K

  25. New Combination P1V1 P2V2 n1 T1 n2T2 = = K

  26. Ideal Gas Law PV = nRT

  27. Dalton’s Law

  28. The total pressure = the sum of the partial pressures PT = P1 + P2 + etc

  29. Graham’s Law

  30. The velocities of particles are inversely proportioned to the square root of their masses v1 M2 v2 M1 =

  31. Calculate the new volume of 5.0 L of gas when its pressure is doubled and its temperature is tripled:

  32. Calculate the volume of a gas at STP when it occupies 150.0 mL at 227oC under 303.9 kPa pressure:

  33. Calculate the volume of 3.0 moles of gas at -23oC under 83.1 kPa pressure.

  34. Drill: Calculate the volume of a gas at STP when it occupies 80.0 mL at 273oC under 303.9 kPa pressure:

  35. Drill: Calculate the number of moles of gas occupying 831 mL under 250 kPa at 227oC & Pass in Lab

  36. Review & Collect Drill & HW

  37. CHM II HW • Review PP 11 • Complete the attached worksheet

  38. Are there any questions on previous material?

  39. Calculate the volume of a gas at STP when it occupies 80.0 mL at 273oC under 303.9 kPa pressure:

  40. Calculate the ratio of the velocities of He gas to HCl gas:

  41. Calculate the mass of CO2 occupying 83.1 mL under 25 GPa at 227oC

  42. Calculate the molecular mass of 5.0 g of gas occupying 831mL under 250 MPa at 227oC

  43. Ideal Gas Law PV = nRT

  44. Related Formulas D or r = m V m/n MW =

  45. MW = m/n n = m/MW PV = nRT

  46. PV = mRT MW mRT PV MW =

  47. Drill: Calculate the volume in mL of 4.0 g bromine gas at 127oC under 83.1 kPa pressure.

  48. Review & Collect Drill & HW

  49. CHM II HW • Review PP 11 • Complete the attached assignment & turn it in tomorrow

  50. Are there any questions on previous material?

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