Thermodynamic Processes

Thermodynamic Processes

1. Isochoric (constant volume)

   • Q=nCvT
   • W=0
   • U=nCvT
   • P1/T1=P2/T2

2. Isobaric (constant pressure)

   • Q=nCpT
   • W=PV
   • nCpT-PV
   • V1/T1=V2/T2

3. Isothermal (constant temperature)

   • Q=nRTln(V2/V1)
   • W=nRTln(V2/V1)
   • U=0
   • P1V1=P2V2

4. Adiabatic (no heat transferred)

   • Q=0
   • W=(1/(y-1))(P1V1-P2V2)
   • W=(1/(y-1))(P1V1-P2V2)
   • P1V1=P2V2

5. First Law of thrmodynamics

   • Change in U=Q-W