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• Introduce Gas Laws [details]
CHEMISTRY
May 6, 2020

PowerPoint presentation  showing gas problems worked out.



  Demonstration: Simulation of gas laws - with people (using metronome)
        break pine board with air pressure holding down a newspaper

discuss variables important in gas laws: moles, pressure, volume, temperature
Derive a value for R = 0.0821 l atm / mol K
Given 1 mol = 22.4 L @ STP

Give   Ideal Gas Law  PV = nRT and change this equation into Combined Gas Law 
        

Boyle's Law P1V1 = P2V2
Gas Laws with One Term Constant

Look at:  Gas Laws Calculations


Objectives  correspond to Introductory Chemistry Concepts & Connections 4th Edition  by Corwin

11.1 PROPERTIES OF GASES
  
  • To list five observed properties of a gas.

11.2 ATMOSPHERIC PRESSURE
    
• To state standard atmospheric pressure in the following units: atm, mm Hg, torr, cm Hg, in. Hg, psi, and kPa.
     • To convert a given gas pressure into a different unit of measurement.

11.3 VARIABLES AFFECTING GAS PRESSURE
    
• To identify the three variables that affect the pressure of a gas.
     • To state whether gas pressure increases or decreases for a given change in the volume, the temperature, or the number of moles of gas.

11.4 BOYLE'S LAW
   
 • To sketch a graph of the pressure-volume relationship for a gas.
     • To calculate the pressure or volume of a gas after a change in conditions.

11.5 CHARLE'S LAW
   
 • To sketch a graph of the volume-temperature relationship for a gas.
     • To calculate the volume or temperature of a gas after a change in conditions.

11.6 GAY-LUSSAC’S LAW
   
 • To sketch a graph of the pressure-temperature relationship for a gas.
     • To calculate the pressure or temperature of a gas after a change in conditions.

11.7 COMBINED GAS LAW
     • To calculate the pressure, volume, or temperature of a gas after a change in conditions.

11.10 IDEAL GAS BEHAVIOR
     • To list five characteristics of an ideal gas according to the kinetic theory of gases.
     • To determine the value of absolute zero from a graph of volume or pressure versus temperature.

11.11 IDEAL GAS LAW
    
• To calculate the pressure, volume, temperature, or moles of gas, from the ideal gas equation.
     • To calculate the molar mass of a gas from the ideal gas equation.


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