Identification of Different Process
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Q.
Which of the following is true for an adiabatic process?
d P = 0
d T = 0
d V = 0
d Q = 0
Q. an ideal gas at temperature T and initial volume V is first expanded adiabatically to a volume 2V and then isothermally expanded to volume V".It is now compressed adiabatically until its adiabatically temperature becomes T again.The final volume is ?
Q. 114.Starting with the same initial conditions, an ideal gas expands from volume V1 to V2 in the different ways, the work done by the gas W1 if the process is purely isothermal, W2 if purely isobaric and W3 of purely adiabatic, then: 1- W2>W1>W3 2- W2>W3>W1 3- W1>W2>W3 4- W1>W3>W2
Q. A cyclic process ABCD is shown in the P-V diagram for an ideal gas. Which of the following diagrams represents the same process?
Q. A fixed mass m of a gas is subjected to transformation of states from K to L to M to N and back to K as shown in the figure. The pair of isochoric processes among the transformation of states is:
- K to L and L to M
- L to M and N to K
- L to M and M to N
- None of the above
Q.
Two mole of an ideal gas isn heated at constant pressure of oe atmosphere from 27∘C to 127∘C. If Cv, m = 20 + 10−2 T JK−1 mol−1, then q and ΔU for the process are respectively.
7062.8, 5400 J
6362.8 J, 4700 J
1522.2 J, 1124.4 J
3181.4 J, 2350 J
Q. For an ideal gas, an illustration of three different paths A, (B+C) and (D+E) from an initial state P1, V1, T1 to a final state P2, V2, T1 is shown in the given figure:
Path A represents a reversible Isothermal expansion from P1, V1toP2, V2. Path (B+C) reperesents a reversible adiabatic expansion (B) from P1V1, T1toP3, V2, T2 followed by reversible heating the gas at constant volume (C) from P3, V2, T2toP2, V2, T1. Path ?(D+E) represents a reversible expansion at constant pressure P1(D) from P1, V1, T1 to P1, V2, T3 followed by a reversible cooling at constant volume V2(E) from P1, V2, T3toP2, V2, T1
What is qrev, for path (B+C)?
- nRlnV2V1
- −nRlnV2V1
- zero
- nRT1lnV2V1
Q.
what is the meaning of adiabatic system?
Q.
2 mol of zinc is dissolved in HClat 25∘C. The work done in an open vessel is:
−2.447 kJ
−4.955 kJ
R2
3R
Q. Two moles of a perfect gas undergo the following processes
(i) a reversible isobaric expansion from (1.0 am, 20.0L) to (1.0 atm, 40.0 L)
(ii) a reversible isochoric change of state from (1.0 atm, 40.0 L) to (0.5 atm, 40.0 L);
(iii) a reversible isothermal compression from (0.5 am, 40.0 L) to (1.0 atm, 20.0 L)
What is the total heat exchange here in Joules?
ln2=0.7, ln3=1.1, R=1/12 L atm/mol, 25/3 J/mol K, 1L atm=101 J
(i) a reversible isobaric expansion from (1.0 am, 20.0L) to (1.0 atm, 40.0 L)
(ii) a reversible isochoric change of state from (1.0 atm, 40.0 L) to (0.5 atm, 40.0 L);
(iii) a reversible isothermal compression from (0.5 am, 40.0 L) to (1.0 atm, 20.0 L)
What is the total heat exchange here in Joules?
ln2=0.7, ln3=1.1, R=1/12 L atm/mol, 25/3 J/mol K, 1L atm=101 J