Chemistry 121

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Chemistry 121

• Week 3 Gases

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Check-in

• The vapor in a cylinder in your automobile engine
  (T constant) is compressed by the piston to 1/10
  of the original volume.
• How large is the change in pressure?

http//www.yourdictionary.com/ahd/p/p0332100.html
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Charless Law
http//cnx.org/content/m12598/latest/fig4.png
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Check-in, cont.

• A gas in a sealed jar (constant V) is heated and
  Kelvin temperature doubles.
• How large is the change in the pressure?

http//www.stacksandstacks.com/html/105799_pressur
e-cooker-stainless-steel-with-pasta-insert.htm
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Check-in, cont.

• If a gas in a jar with a leaky seal (P and V
  constant) is heated and the Kelvin temperature
  quadruples, what fraction of the gas escapes?

http//www.rainbowryders.com/safety.html
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Check-in, cont.

• Describe a situation illustrating that it would
  be nonsense to use a Centrigrade temperature like
  0C in the Ideal Gas Law.