A unit mass of a substance undergoes an irreversible
Chapter 7, Problem 231P(choose chapter or problem)
Problem 231P
A unit mass of a substance undergoes an irreversible process from state 1 to state 2 while gaining heat from the surroundings at temperature Tin the amount of q.If the entropy of the substance is S1 at state 1, and s2 at state 2, the entropy change of the. substance Δs during this process is
(a) Δs < s2− s1 (b) Δs < s2− s1
(c) Δs = s2− s1 (d) Δs = s2− s1+q/T
(e) Δs> s2− s1+q/T
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