CameraIcon
CameraIcon
SearchIcon
MyQuestionIcon


Question

With what minimum pressure (in kPa), a given volume of an ideal gas (Cp,m=72 R), originally at 400 K and 100 kPa pressure can be compressed irreversibly and adiabatically in order to raise its temperature to 600 K:
  1. 362.5 kPa
  2. 437.5 kPa
  3. 550 kPa
  4. 275 kPa


Solution

The correct option is D 275 kPa
ΔU=w+q
For an aidabatic irreversible compression, q = 0.
ΔU=w
nCv,m(T2T1)=Pext(V2V1)
nCv,m(T2T1)=P2[nRT2P2nRT1P1]
52R(T2T1)=P2×R[T2P2T1P1]
P2=275 kPa

flag
 Suggest corrections
thumbs-up
 
0 Upvotes


Similar questions
View More


People also searched for
View More



footer-image