Lecture 26 Flashcards

1
Q

Explain the 5 behaviours of an ideal gas

A
  1. Particles are in random motion
  2. Negligible particle volume
  3. Particles collide with each other, and container walls
  4. Particles move independently, and experience interparticle forces
  5. Constant total energy (energy transferred but KE is conserved)
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2
Q

In an ideal gas, what is the KE directly proportional to?

A

Temperature

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3
Q

Why do particles move at different speeds

A

Because of collisions

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4
Q

When a particle hits the wall what does it exert

A

Momentary pressure

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5
Q

On average what makes particles move faster (high Urms)

A

If they are light (small M) and if temperature is high (large T)

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6
Q

What does temperature measure

A

The degree of random motion

Higher T = greater KE = greater motion

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7
Q

What does temperature mean for one particle

A
  • temperature only makes sense on the macroscopic level

- doesn’t make sense to define temperature of a single particle

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8
Q

What does zero temperature mean

A

All molecular motion would stop at absolute zero

All gases condense to solids or liquids below zero

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9
Q

What happens to distribution at higher temperatures

A

It widens

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10
Q

What conditions would you expect for ideal behaviour

A

Low P, high T

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11
Q

What conditions would you expect for non-ideal behaviour

A

High P, low T

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