- A. Tds = dE – dW = 0
- B. DE – dW – Tds = 0
- C. Tds – dE + dW< 0
- D. Tds – dT + dW< 0
Answer: Option C.
Explanation:
From second law of thermodynamics :
TdS⩾δQ
⇒TdS⩾dU+δW
For an irreversible process TdS−dU−δW>0
And for an reversible process TdS−dU−δW=0
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