( p1V1)/T1 = (p2V2)/T2 (fixed number of moles)
Example
The pressure in a tank of 20 ℓ is 3.0 bar at a temperature of 17 oC.
The temperature is raised. The volume increases to 21 ℓ and the pressure to 3.5 bar.
Calculate the new temperature.
( p1V1)/T1 = (p2V2)/T2 T in Kelvin !
(3.0 x 20)/290 = (3.5 x 21)/ T2
60/290 = 73.5/T2
60 T2 = 73.5 x 290
60 T2 = 21315
T2 = 355 K = 82 oC