Mechanical Engineering - Thermodynamics - Discussion
Discussion Forum : Thermodynamics - Section 5 (Q.No. 28)
28.
The entropy may be expressed as a function of
Discussion:
23 comments Page 1 of 3.
Rashid Khan Kakar said:
4 years ago
Entropy is the point function.
So we can't say that it's for all only pressure and temperature.
So we can't say that it's for all only pressure and temperature.
Future learn said:
5 years ago
Entropy as a function of temperature and volume.
We can express the entropy as a function of temperature and volume.
It can be derived from the combination of the first and the second law for the closed system.
For an ideal gas, the temperature dependence of entropy at constant volume is simply Cv over T.
The volume dependence of entropy at constant temperature is are over volume for ideal gases.
We can express the entropy as a function of temperature and volume.
It can be derived from the combination of the first and the second law for the closed system.
For an ideal gas, the temperature dependence of entropy at constant volume is simply Cv over T.
The volume dependence of entropy at constant temperature is are over volume for ideal gases.
Akhil said:
6 years ago
@Asura temperature and pressure are intensive property not extensive property.
ASURA said:
7 years ago
Entropy being an extensive property depends only on temperature and pressure which are also extensive properties if it is function of volume it would not be a extensive property as volume itself is not extensive.
Vipul said:
7 years ago
Entropy is a point function which is a property of the system, thus it can be expressed in the form of other point functions, which is also obvious from tds relations. Next, like internal energy which is a point function but can be expressed as function of heat and work (Ist law) so does entropy so correct option is D.
Siva said:
8 years ago
Entropy is a function of temperature it is independent of pressure and volume.
Then how? pressure is given.
Then how? pressure is given.
Akash said:
8 years ago
I agree @Hardik.
Pnkj said:
8 years ago
Yes right @Vivek.
Varun said:
8 years ago
That is a change in entropy. Absolute entropy has a different formula only dependent on p and t @Vivek.
Bapugouda said:
8 years ago
Answer is A & B correct @Om Nagar.
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