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For a reversible process, the change in entropy of the system is equal to the he

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Question: For a reversible process, the change in entropy of the system is equal to the heat absorbed divided by the temperature. This is expressed as:

Options:

  1. ΔS = Q/T
  2. ΔS = T/Q
  3. ΔS = Q + T
  4. ΔS = Q - T

Correct Answer: ΔS = Q/T

Solution: 

For a reversible process, the change in entropy (ΔS) is given by ΔS = Q/T, where Q is the heat absorbed and T is the temperature.

For a reversible process, the change in entropy of the system is equal to the he

Practice Questions

Q1
For a reversible process, the change in entropy of the system is equal to the heat absorbed divided by the temperature. This is expressed as:
  1. ΔS = Q/T
  2. ΔS = T/Q
  3. ΔS = Q + T
  4. ΔS = Q - T

Questions & Step-by-Step Solutions

For a reversible process, the change in entropy of the system is equal to the heat absorbed divided by the temperature. This is expressed as:
Correct Answer: ΔS = Q/T
  • Step 1: Understand that entropy (ΔS) is a measure of disorder or randomness in a system.
  • Step 2: Recognize that for a reversible process, we can calculate the change in entropy using a specific formula.
  • Step 3: The formula for change in entropy is ΔS = Q/T.
  • Step 4: In this formula, Q represents the amount of heat absorbed by the system.
  • Step 5: T represents the absolute temperature at which the heat is absorbed.
  • Step 6: To find the change in entropy, you divide the heat absorbed (Q) by the temperature (T).
  • Step 7: This relationship holds true only for reversible processes, meaning the process can go forward and backward without any loss of energy.
  • Entropy Change in Reversible Processes – The relationship between heat transfer and temperature in determining the change in entropy for reversible processes.
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