Unit 8: Gases

Chm.2.1.5 Explain the relationships among pressure, temperature, volume, and quantity of gas, both qualitative and quantitative.

• Identify characteristics of ideal gases.
• Apply general gas solubility characteristics.
• Apply the following formulas and concepts of kinetic molecular theory.
  • 1. 1 mole of any gas at STP=22.4 L
  • 2. Ideal gas equation (PV=nRT), Combined gas law (P1V1/T1 = P2V2/T2) and applications holding one variable constant: for PV=k, P1V1 = P2V2; for V/T=k, V1/T1= V2/T2; for P/T=k, P1/T1 = P2/T2. Note: Students should be able to derive and use these gas laws, but are not necessarily expected to memorize their names.
  • 3. Avogadro’s law (n/V=k), n1/V1 = n1/V2
  • 4. Dalton’s law (Pt=P1+P2+P3 …)
  • 5. Vapor pressure of water as a function of temperature (conceptually