Basic Question Regarding the Combined Gas Law/Equation

  • Thread starter Denyven
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  • #1
Denyven
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Hello All,
I was wondering, in the combined gass law [tex]\frac{p_{1}V_{1}}{T_{1}}=\frac{p_{2}V_{2}}{T_{2}}[/tex] Does [tex]T_{1}[/tex] and [tex]T_{2}[/tex] have to be in kelvins, or can they be any other unit of temperature as long as a consistency of units is used?

Thanks
 

Answers and Replies

  • #2
tiny-tim
Science Advisor
Homework Helper
25,838
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Hello Denyven! :smile:

They could be in degrees Fahrenheit, provided it was adjusted to º F0, say, where absolute zero is at 0º Fo. :wink:

Without that adjustment, the equation just won't work. :redface:
 
  • #3
Char. Limit
Gold Member
1,216
22
Just to let you know, as Kelvin is the Celsius scale with the origin at zero, so Rankine is the Fahrenheit scale with the origin at zero.

However, the scale must be set up so that the absolute coldest temperature is zero.
 
  • #4
espen180
834
2
You could represent it in, say, celcius. Then you would have [tex]\frac{pV}{T(K)}=\frac{pV}{T(^\circ C)-273.15}[/tex]. You could do it similarily with Fahrenheit if you want, but for simple equations, use the kelvin scale.
 

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