Thermodynamics: Change in entropy
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Two equal quantities of water, each of mass m and at temperatures T_1 and T_2 are diabatically mixed together, the pressure remaining constant.
a. Show that the entropy change of the universe is:
delta(S) = 2*m*Cp*ln[(T_1+T_2)/2sqrtT_1*T_2)]
b. Show that delta(S) greater than 0 for any finite temperatures T_1 and T_2. (Hint: (a-b)^2 greater than 0 for all real a and b.)
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Solution Summary
Two equal quantities of water at different temperature are mixed, proved that change in entropy grater than zero in all cases.
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Only need to show part b.
two equal quantities of water each of mass m and at temperatures T_1 and T_2 are adiabatically mixed together, the pressure remaining constant.
a. Show that the entropy change of the universe ...
Purchase this Solution
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