ThermodynamicsHard
Question
A system undergoes a process in which the entropy change is +5.51 JK–1. During the process, 1.50 kJ of heat is added to the system at 300 K. The correct information regarding the process is
Options
A.the process thermodynamically reversible.
B.the process is thermodynamically irreversible.
C.the process may or may not be thermodynamically reversible.
D.the process must be isobaric.
Solution
$\Delta S_{\text{Surr}} = - \frac{1.5 \times 10^{3}}{300} = - 5\text{ J/K}$
$\text{Now, }\Delta S_{\text{unit}} = \Delta S_{sys} + \Delta S_{\text{surr}} = 5.51 + ( - 5) = + 0.51\text{ J/K}$
Hence, the process is irreversible.
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