Thermodynamics-how to tell if a gas is an ideal gas?

In summary, an ideal gas is a theoretical gas that follows the ideal gas law, which states that the pressure, volume, and temperature are directly proportional. To determine if a gas is ideal, one can use the ideal gas law to compare calculated values with actual values. Real gases deviate from ideal behavior due to factors like intermolecular forces, gas molecule volume, and temperature. Temperature affects gas behavior by changing the average kinetic energy of particles, causing deviations from ideal behavior. The main difference between an ideal gas and a real gas is that real gases do not follow the ideal gas law and may have different heat capacities and compressibility factors.
  • #1
pyroknife
613
3
I know a gas is ideal if it has a higher T or low P relative to its CP.

A probably stated that nitrogen is at 300kPa and 227 deg C. The solutions says its an ideal gas, but how does it know? Is it just same to assume that or is there an actual table that has gas's and their CPs?
 
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  • #2
Hey pyroknife
Ideal gas is a theoretical concept
And real gas tend show ideal gas behaviour at high temperature and low pressure ( both) .
 
  • #3
Can you please elaborate your problem ?
 

1. What is an ideal gas?

An ideal gas is a theoretical gas that follows the ideal gas law, which states that the pressure, volume, and temperature of a gas are directly proportional to each other. This means that if any one of these variables changes, the others will also change in a predictable manner.

2. How can I tell if a gas is an ideal gas?

To determine if a gas is ideal, you can use the ideal gas law (PV=nRT) to calculate the pressure, volume, and temperature of the gas. Then, compare these values to the actual values measured in your experiment. If they are close, then the gas can be considered ideal.

3. What factors can affect a gas's deviation from ideal behavior?

Real gases deviate from ideal behavior due to factors such as intermolecular forces, volume of the gas molecules, and temperature. At high pressures and low temperatures, real gases are more likely to deviate from ideal behavior.

4. How does temperature affect the behavior of a gas?

Temperature affects the behavior of a gas by changing the average kinetic energy of the gas particles. As temperature increases, the gas particles move faster, resulting in an increase in pressure and volume. This can cause a gas to deviate from ideal behavior.

5. What is the difference between an ideal gas and a real gas?

An ideal gas follows the ideal gas law, while a real gas does not. Real gases have non-zero volumes and experience intermolecular forces, which can cause deviations from ideal behavior. Additionally, real gases may also have different heat capacities and compressibility factors compared to ideal gases.

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