This preview has intentionally blurred sections. Sign up to view the full version.
View Full Document
Unformatted text preview: again tripled. d. The gas is finally reversibly cooled to 300 K at constant pressure. 3.4 Calculate the change in the enthalpy and the change in entropy when 1 mole of SiC is heated from 25 ° C to 1000 ° C. The constant pressure molar heat capacity of SiC varies with temperature as c p = 50.79 + 1.97 * 103 T – 4.92 * 10 6 T2 + 8.20 * 10 8 T3 J/moleK 3.5 One mole of copper at a uniform temperature of 0 ° C is placed in thermal contact with a second mole of copper which, initially, is at a uniform temperature of 100 ° C. Calculate the temperature of the 2 mole system, which is contained in a adiabatic enclosure, when thermal equilibrium is attained. Why is the common uniform temperature not exactly 50 ° C? How much heat is transferred, and how much entropy is produced by the transfer? The constant pressure molar heat capacity of solid copper varies with temperature as c p = 22.64 + 6.28 * 103 T J/molK...
View
Full Document
 Fall '11
 KIM
 Thermodynamics, 50°C, 25°C, 3 j, 0°C, 2 mole

Click to edit the document details