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5 Questions around this concept.
There are two identical chambers, completely thermally insulated from the surroundings. Both chambers have a partition wall dividing the chambers into two compartments. Compartment 1 is filled with an ideal gas and compartment 3 is filled with a real gas. Compartments 2 and 4 are vacuum. A small hole (orifice) is made in the partition walls and the gases are allowed to expand in a vacuum.
Statement 1: No change in the temperature of the gas takes place when the ideal gas expands in a vacuum. However, the temperature of real gas goes down (cooling) when it expands in a vacuum.
Statement 2: The internal energy of an ideal gas is only kinetic. The internal energy of a real gas is kinetic as well as potential.
A cyclic process
The volume occupied by the molecules contained in water at
if the intermolecular forces vanish away is -
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Ideal gas - It is a hypothetical gas (which is not real gas), whose molecules occupy negligible space and have no interactions (Force of interaction is very less), and which consequently obeys the gas laws exactly.
So, the ideal gas does not exist in real, but for the study, we take some assumptions to make the gas ideal and we can apply some laws that are only valid for ideal gases. These assumptions are -
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