Pressure-Temperature Graph All gases extrapolate to the same temperature at 0 pressure This temperature is absolute zero Temperature readings are nearly Kelvin Scale independent of the gas Pressure varies with temperature When the pressure of a gas when maintaining a constant volume goes to zero, its temperature is -273.15°C Trial I This temperature is called absolute zero This is the zero point of the Trial 2 Kelvin scale 273.15°C=0K Trial 3 To convert: T= Tx-27315 273.15-200-1000100200T(°C Reeder-05-06 Physics 201: Lecture 22, Pg 6Reeder - 05-06 Physics 201: Lecture 22, Pg 6 Pressure-Temperature Graph All gases extrapolate to the same temperature at 0 pressure This temperature is absolute zero Kelvin Scale When the pressure of a gas goes to zero, its temperature is –273.15º C This temperature is called absolute zero This is the zero point of the Kelvin scale –273.15º C = 0 K To convert: TC = TK – 273.15 Temperature readings are nearly independent of the gas Pressure varies with temperature when maintaining a constant volume