1. orient that: [pic]
2. Show that: [pic]
[pic]
3. [pic]
4. [pic]
[pic]
5. 3.5 bulwarkes of an ideal gun is expanded from 450K and an initial wring of 5 breastwork to a final pressure of 1 bar and Cp,m=5/2R. Calculate w for the following two cases: (i) the working out is isothermal and rechargeable (ii) the expansion is adiabatic and reversible. What do you convey in both cases in an irreversible situation?
autonomic nervous system:(i) 21,080 J (ii) 236.4 K, w =-9324 J
In the irreversible case the temporary for the adiabatic process will be different than the reversible case
6. Calculate the entropy change in heating 1.00 mol of Al from 300 K to 500 K at changeless pressure. The constant pressure heat capacity of Al is given to good approximation by[pic].
Answer: The calculation is
[pic]
7. 10 moles of a gas are contained under high pressure so that the volume is 0.5 L. The external pressure is suddenly bring down and the gas allowed to expand into a 50L container.
Assume the gas is a van der Waals gas with a=3.7 atm L2 mol-2 and b=0.043 Lmol-1. The temperature is constant at 298K. Determine the change in entropy of the gas for this volume change.
[pic]
8. The composition of dry product line is approximately 78% N2, 21% O2, and 1% Ar by volume (which is the very(prenominal) as mole percent). What is the molar entropy of mixing of air?
[pic]
9. Determine the value of ?G per mole for the freezing of supercooled peeing at -60C. (Latent heat of fusion of ice 80 cal gm-1)
10. ascend the change in Gibbs free energy accompanying the muscle contraction of 1 mole of ethane at 500C from 20 to 250 bars.
proposition: Use pressure dependence formula
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