Question
Download Solution PDFWhat is the statement for the second law of thermodynamics?
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFCONCEPT:
- The second law of thermodynamics: It states that the total entropy of a system either increases or remains constant in any spontaneous process; it never decreases.
- An important implication of this law is that heat transfers energy spontaneously from higher- to lower-temperature objects, but never spontaneously in the reverse direction.
- This is because entropy increases for heat transfer of energy from hot to cold.
EXPLANATION:
- Option 1: First law of thermodynamics states that energy is conserved.
- It says heat given to a system is converted into work done and internal energy.
- So this is not the correct answer.
- Option 2 and 3: According to the second law of thermodynamics, The final entropy of a system never decreases.
- It states that the total entropy of the universe (system + surrounding) must increase in every spontaneous process.
- So the correct answer is option 3.
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