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Homework Help: Temperature and pressure problem

  1. Mar 23, 2007 #1
    I know that in a closed container, pressure increases as temperature increases, but I am having trouble trying to explain it mathematically. I did some searching around and came up with this formula: PV = nRT. I am having some trouble trying to apply this to my scenario;

    closed volume - 496.5 cu-inche (~.5 L)
    Temperature - 120* F
    Pressure - 6 psi (~.41 bar)

    The volume remains constant. What would the pressure be if the temperature increased to 900* F?
     
  2. jcsd
  3. Mar 23, 2007 #2

    russ_watters

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    Staff: Mentor

    All you need to do is rearrange the equation and drop out the constants. I'm not a big fan of derivations, but....

    Since n, V, and R are constants...
    P/T=Constant
    P1/T1=P2/T2

    There are many forms for the ideal gas equation...
     
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