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1、Chapters 2 and 3 1. Determine which of the following properties of a thermodynamic system are extensive properties and which are intensive.(a) The mass density.intensive(b) The molar density.intensive(c) The potential energy of a system in a gravitational field.extensive(d) The molar concentration o
2、f NaCl in a salt solution.intensive(e) The heat absorbed by the gas in a cylinder when it is compressed.extensive2. Write the total differential of the function:z = 12u3vcos(x)dz=Adu+Bdv+Cdx(a) Identify the coefficients of the three differentials in this expression as appropriate partial derivatives
3、.A=36 u2vcos(x)B=12 u3cos(x)C= -12 u3vsin(x)(b) Show that three Maxwell relations hold among these coefficients.3. The laws of thermodynamics are “pervasive”. Explain in detail the meaning of this important statement.世界上发生的任何过程都必须服从热力学定律,违背热力学定律的过程不可能发生4. Consider an isolated system (no heat, matter
4、 or work may be exchanged with the surroundings) consisting of three internal compartments A, B and C, of equal volumes. The compartments are separated by partitions and each partition has a valve that may be opened remotely. Initially the central volume B is filled with a gas at 298 K (25 C) and th
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