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It does not give information concerning feasibility of a thermodynamic proces. NOT EXPLAINED BY FIRST LAW
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It tells that work obtained is equal to heat absorbed but in actual heat absorbed can not be completely converted into work. Limitations motivating second law
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4 The second law of thermodynamics It will arouse changes while the heat transfers from low temp.substance to high temp. one.
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All spontaneous processes are thermodynamically irreversible..
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Without the use of any external agency, heat can not by itself pass from a colder to a hotter body.
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State 1 T hot State 2 T hot State 4 T cold State 3 T cold isothermal adiabatic isothermal q=0, w=C V T q=0, w=-C V T w= -nRT hot ln(V2/V1) q=-w w= -nRT cold ln(V4/V3) q=-w
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112 The second law of thermodynamics It will arouse changes while the heat transfers from low temp.substance to high temp. one.
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119 The second law of thermodynamics It will arouse changes while the heat transfers from low temp.substance to high temp. one.
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