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What happens to the temperature of a gas during an isothermal expansion? (2021)

Practice Questions

Q1
What happens to the temperature of a gas during an isothermal expansion? (2021)
  1. Increases
  2. Decreases
  3. Remains constant
  4. Varies with pressure

Questions & Step-by-Step Solutions

What happens to the temperature of a gas during an isothermal expansion? (2021)
  • Step 1: Understand what isothermal means. Isothermal means 'constant temperature'.
  • Step 2: Know that during an expansion, a gas is allowed to increase in volume.
  • Step 3: Realize that when a gas expands, it does work on its surroundings.
  • Step 4: Understand that to keep the temperature constant during this expansion, the gas must absorb heat from its surroundings.
  • Step 5: Conclude that during an isothermal expansion, the temperature of the gas does not change; it stays the same.
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