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In the kinetic theory of gases, what does the term 'ideal gas' refer to?

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Question: In the kinetic theory of gases, what does the term \'ideal gas\' refer to?

Options:

  1. A gas that obeys the ideal gas law at all conditions.
  2. A gas with no intermolecular forces.
  3. A gas that has a fixed volume.
  4. A gas that can be liquefied easily.

Correct Answer: A gas with no intermolecular forces.

Solution: 

An ideal gas is defined as a gas that has no intermolecular forces and occupies no volume, allowing it to perfectly obey the ideal gas law under all conditions.

In the kinetic theory of gases, what does the term 'ideal gas' refer to?

Practice Questions

Q1
In the kinetic theory of gases, what does the term 'ideal gas' refer to?
  1. A gas that obeys the ideal gas law at all conditions.
  2. A gas with no intermolecular forces.
  3. A gas that has a fixed volume.
  4. A gas that can be liquefied easily.

Questions & Step-by-Step Solutions

In the kinetic theory of gases, what does the term 'ideal gas' refer to?
  • Step 1: Understand that gases are made up of tiny particles called molecules.
  • Step 2: Know that in the kinetic theory of gases, we study how these molecules behave.
  • Step 3: An 'ideal gas' is a special type of gas that we use as a model.
  • Step 4: An ideal gas has no forces pulling or pushing between its molecules (no intermolecular forces).
  • Step 5: An ideal gas is also considered to take up no space (occupies no volume).
  • Step 6: Because of these two properties, an ideal gas can perfectly follow the ideal gas law, which relates pressure, volume, and temperature.
  • Ideal Gas Definition – An ideal gas is a theoretical gas composed of many particles that are in constant random motion, with no intermolecular forces and negligible volume.
  • Ideal Gas Law – The ideal gas law (PV=nRT) describes the relationship between pressure (P), volume (V), number of moles (n), gas constant (R), and temperature (T) for an ideal gas.
  • Assumptions of Ideal Gases – Ideal gases are assumed to have perfectly elastic collisions and to occupy no space, which simplifies calculations in thermodynamics.
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