If the boundary of a system is at zero degrees centigrade, the change in entropy dS due to heat transfer dQ is zero.Question 9Select one:a.TRUEb.FALSE
Question
If the boundary of a system is at zero degrees centigrade, the change in entropy dS due to heat transfer dQ is zero.
Question 9 Select one:
- a. TRUE
- b. FALSE
Solution
Final Answer
The correct answer is b.FALSE.
Explanation: The change in entropy is defined by the equation:
where is the heat transfer and is the absolute temperature in Kelvin. If the boundary temperature is at zero degrees Celsius (273.15 K), and there is any non-zero heat transfer (), the change in entropy would not be zero. Therefore, if heat is transferred, entropy changes regardless of the temperature, provided it is not absolute zero (0 K).
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