Cv and Cp
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Cv and Cp
Did we ever learn how to convert between Cv and Cp and vice versa? If we did, what's the equation?
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Re: Cv and Cp
My TA gave us the formula I don't think professor lavelle covered it. it's Cv = Cp — R. Accordingly, Cp = Cv + R
R being the gas constant 8.314
R being the gas constant 8.314
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Re: Cv and Cp
Cv represents the heat capacity for an ideal gas at constant volume.
Cp represents the heat capacity for an ideal gas at constant pressure.
Cp = Cv + R, where R = 8.314 J/K*mol
This means that the molar heat capacity at constant pressure is greater than the molar heat capacity at constant volume.
Cp represents the heat capacity for an ideal gas at constant pressure.
Cp = Cv + R, where R = 8.314 J/K*mol
This means that the molar heat capacity at constant pressure is greater than the molar heat capacity at constant volume.
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Re: Cv and Cp
Like others said above, I don't think we learned the conversion in lectures, but it's in the textbook!
Cp = Cv + R, which is why you see Cp = (5/2)R and Cp = (3/2)R for atoms.
Cp = Cv + R, which is why you see Cp = (5/2)R and Cp = (3/2)R for atoms.
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Re: Cv and Cp
Cv and Cp are two different things. Cv is the ideal gas constant for constant volume, while Cp is the ideal gas constant for constant pressure.
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Re: Cv and Cp
The best way to remeber this is between the relationship that Cv is Cp-r and therefore, you just memorize the chart of the CP.
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Re: Cv and Cp
I believe that we don't need to know this for the test, and instead, we use the R values. One is the gas constant when the system is at constant volume and the other is the gas constant when the system is at constant pressure.
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Re: Cv and Cp
Cp = Cv + R, and the R = 8.314 J/K/mol because it is a constant. So If you have one of the other ones Cp or Cv you can easily solve for x to find the other.
Hope this helps.
Hope this helps.
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