In an ideal gas, the molecules possess:
Correct answer: A. Only K.E
- A. Only K.E
- B. Only P.E
- C. K.E and P.E both
- D. Only gravitational energy
Explanation
In the model of an ideal gas, the molecules are considered to be point particles that do not interact with each other except through elastic collisions. This implies that they have no potential energy associated with intermolecular forces, so they only possess kinetic energy. Option A is correct because it reflects this concept. Option B is incorrect because the absence of intermolecular forces means no potential energy. Option C is incorrect because potential energy is not present in an ideal gas. Option D is incorrect as gravitational energy is not a factor that is typically considered for individual gas molecules in this context.
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About Thermodynamics
Thermal equilibrium and heat explain how temperature and energy transfer are related, while molar specific heats describe the heat required by a gas at constant volume or constant pressure. The first law connects heat supplied, work done and change in internal energy, with sign conventions kept distinct from temperature changes.
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