State and Path Variables, Functions
Trending Questions
Q. Volume of co2 obtained at STP by the Complete decomposition of 9.85g Na2CO3 is
Q. Which of the following is a state function?
- Pressure
- Volume
- Temperature
- All of these
Q. Vapour density of PCl_{5 }at 400K is found to be 90.Degree of dissociation of PCl_{5 }will be (1) 15.8% (2) 13.6% (3) 14.25% (4) 90%
Q. 39.A carnot engine working as a refrigerator between 250K and 300K and 500 calorie of heat from the cold reservoir. Heat rejected by it to the hot reservoir is
Q. 60. If the density of methrol is 0.8 kgl/L.what is the volume needed for making 2.5 L of its 0.4M solution?
Q. First law of thermodynamics can be represented by ΔU = q + w.
True
False
Q. 6. The density of mixture of O2 and N2 at NTP is 1.3g/L. Calculate partial pressure of O2
Q.
derive the relationship between delta H and delta U for an ideal gas .explain each term involved in the equation.
Q. law of multiple proportions
Q. For an ideal gas, consider only P-V work in going from an initial state X to the final state Z. The final state Z can be reached by either of the two paths shown in the figure. Which of the following choices is (are) correct?
[Take △S as change in entropy and w as work done].
![](https://s3-us-west-2.amazonaws.com/infinitestudent-images/ckeditor_assets/pictures/20812/content_as2.png)
[Take △S as change in entropy and w as work done].
![](https://s3-us-west-2.amazonaws.com/infinitestudent-images/ckeditor_assets/pictures/20812/content_as2.png)
- △Sx→z=△Sx→y+△Sy→z
- Wx→z=Wx→y+Wy→z
- Wx → y →z=Wx→y
- △Sx→y→z=△Sx→y
Q. Is work done in anticlockwise cycle is positive?
Q. 32.Five rods of same dimensions are stranded as shown. They have thermal conductivity k1, k2, k3, k4 and k5. When point A and C are maintained at different temperature, no heat flows through the central rod if
Q. What is a mole and a molar mass?
Q. For the given graph, which parameters will be non-zero?![](https://s3-us-west-2.amazonaws.com/infinitestudent-images/ckeditor_assets/pictures/612217/original_215.jpg)
![](https://s3-us-west-2.amazonaws.com/infinitestudent-images/ckeditor_assets/pictures/612217/original_215.jpg)
- Q
- ∆H
- ∆U
- ∆S
Q.
Irreversible work done ona n ideal gas in a cylinder when it is compresed bya constant external pressure(Pex) and the volume of the gas changes from Vi to Vf
Q. Difference between physical and chemical equilibrium
Q. Choose the correct answer.
A thermodynamic state function is a quantity :
- used to determine heat chages
- whose value is independent of path
- used to determine pressure volume work
- whose value depends on temperature only
Q. Why in adiabatic reversible process, increase in volume will result in decrease in temperature?
Q. how extensive property becomes intensive property with 2 examples
Q. Any series of operations so carried out that at the end, the system is back to its initial state is called
- Boyle's cycle
- Reversible process
- Adiabatic process
- Cyclic process
Q. Enthalpy is a state function
- True
- False
Q. 1) if the density of methankm is 0.793kg l^-1, what is its volume needed for Making 2.5 l of its 0.25 m solution?
Q. For an ideal gas, consider only P-V work in going from an initial state X to the final state Z . The final state Z can be reached by either of the two paths shown in the figure. Which of the following choice(s) is(are) correct?
[Take △S as change in entropy and w as work done]
![](https://df0b18phdhzpx.cloudfront.net/ckeditor_assets/pictures/834412/original_Trignomatry_1.png)
[Take △S as change in entropy and w as work done]
![](https://df0b18phdhzpx.cloudfront.net/ckeditor_assets/pictures/834412/original_Trignomatry_1.png)
- △SX→Z=△SX→Y+△SY→Z
- wX→Z=wX→Y+wY→Z
- wX→Y→Z≠wX→Y
- △SX→Y→Z=△SX→Y