Chapter 12 Problems
ME354 Thermodynamics 2
Chapter 12 Problems
Problem 12-11
Assuming that air is composed of O2,
O, N2, N and NO, and that only
O2 and
N2 are present in significant amounts
at room temperatures in the ratio of 3.76 moles of
N2 per mole of
O2, determine the composition of
equilibrium air at
1000 K and 1 atm.
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Answer:
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XO2 = 0.2101,
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XO =
8.733x10-11
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XN2 = 0.7899,
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XN =
2.531x10-16
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XNO =
3.483x10-5
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Solution |
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(31.9 KBytes) |
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Problem 12-14
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Using the data in Table B-13, calculate the equilibrium constant for the
gaseous reaction CO2 +
N2 = CO +
H2O at 298 K. Derive an expression
which would let you obtain this instead from Table B-14 in terms of the
equilibrium constants for simpler reactions.
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Answer: log10K =
-4.99
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Solution |
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(38.9 KBytes) |
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Problem 12-24
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One mole of CO reacts with 1 mole of O2
in a steady-flow process. Both inlet conditions are
77 oF at 1 atm. The final products are
a mixture of CO, CO2, and
O2 at 1 atm. Determine the heat
transfer from the system, for the cases where the temperatures of the
products is 3000 and 2800 K. At what exit temperature is the system
adiabatic?
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Answer:
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Qout3000= -6300 Btu/lbm
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Qout2800= 18700 Btu/lbm
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Tad= 2950 K
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Solution |
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(51.9 KBytes) |
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