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Ideal Gas Law

P V = n R T P = pressure in atm V = volume in liters n = moles R = proportionality constant = 0.08206 L atm / mol · K T = temperature in Kelvins. Ideal Gas Law. Holds closely at P < 1 atm. Ideal Gases.

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Ideal Gas Law

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  1. PV=nRT P= pressure in atm V = volume in liters n = moles R = proportionality constant = 0.08206 L atm/ mol·K T = temperature in Kelvins Ideal Gas Law Holds closely at P < 1 atm

  2. Ideal Gases Ideal gases are imaginary gases that perfectly fit all of the assumptions of the kinetic molecular theory. • Gases consist of tiny particles that are far apart • relative to their size. • Collisions between gas particles and between • particles and the walls of the container are • elastic collisions • No kinetic energy is lost in elastic • collisions

  3. Ideal Gases (continued) • Gas particles are in constant, rapid motion. They • therefore possess kinetic energy, the energy of • motion • There are no forces of attraction between gas • particles • The average kinetic energy of gas particles • depends on temperature, not on the identity • of the particle.

  4. Real Gases Do Not Behave Ideally Real gases DO experience inter-molecular attractions Real gases DO have volume Real gases DO NOT have elastic collisions

  5. Deviations from Ideal Behavior

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