What happens to the internal energy of an ideal gas when it is compressed adiaba

Practice Questions

Q1
What happens to the internal energy of an ideal gas when it is compressed adiabatically?
  1. It increases
  2. It decreases
  3. It remains constant
  4. It depends on the initial temperature

Questions & Step-by-Step Solutions

What happens to the internal energy of an ideal gas when it is compressed adiabatically?
  • Step 1: Understand what adiabatic means. Adiabatic means that no heat is exchanged with the surroundings.
  • Step 2: Know that when a gas is compressed, it means that the volume of the gas is decreasing.
  • Step 3: Realize that during compression, work is done on the gas. This means energy is being added to the gas.
  • Step 4: Remember that the internal energy of a gas is related to its temperature and the energy of its particles.
  • Step 5: Since work is done on the gas and no heat is lost, the internal energy of the gas increases.
  • Step 6: Conclude that in adiabatic compression, the internal energy of the ideal gas increases due to the work done on it.
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