In which of the following scenarios would the entropy of the system decrease?

Practice Questions

Q1
In which of the following scenarios would the entropy of the system decrease?
  1. Ice melting
  2. Water evaporating
  3. Gas compressing
  4. Sugar dissolving in water

Questions & Step-by-Step Solutions

In which of the following scenarios would the entropy of the system decrease?
  • Step 1: Understand what entropy is. Entropy is a measure of disorder or randomness in a system.
  • Step 2: Recognize that gases have a lot of microstates, which are different ways the particles can be arranged.
  • Step 3: When a gas is compressed, the space it occupies becomes smaller.
  • Step 4: With less space, there are fewer ways (microstates) for the gas particles to be arranged.
  • Step 5: Since the number of microstates decreases, the disorder of the system also decreases.
  • Step 6: Therefore, when a gas is compressed, the entropy of the system decreases.
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