IDEAL GAS

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IDEAL GAS

• Assumptions
• 1. Non-Interacting molecules
• 2. Perfectly elastic collisions
• 3. Large number of molecules
• 4. Separation between molecules
• gtdiameter of a molecule

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IDEAL GAS

• System particular object or set of objects
• Microscopic view details of molecular
  motion
• Macroscopic view description based on 106
  -1010 or more molecules and are sensible with
  transducers to measure
• P, V, T, N, M.
• Most often P, V, T, N are state gas variables

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IDEAL GAS

• PV constant (T const) Boyles Law
• P(1/T) constant (V const) Gay-Lussacs
• V(1/T) constant (P const) Charles Law
• PV/(T) nR (nmoles) R 8.314 J/(mol K)
• Nk (N number of molecules)
  (kBoltzmanns constant)
• R NA k NA 6.022 x 1023 molecules
• k 1.381 x 10-23 J/K