Long Answer Type
Short Answer TypeEven though carbon dioxide is heavier than air, it does not form the lower layer, Explain.
Long Answer TypeWhat are ideal and real gases? Give the points of difference between them.
Real gases: A gas which does not obey general gas equation and all other gas laws strictly but tends towards ideality at low pressure and high temperature is known as real gas or non-ideal gas.
Points of differences:
| Ideal gas | Real gas |
| 1. It obeys gas laws (PV = RT) under all conditions of temp, and pressure. | 1. It obeys gas laws only at high temp. and low pressure. |
| 2. It does not exist in actual practice. The concept of an ideal gas is only hypothetical. | 2. All gases are real gases. |
| 3. The volume occupied by molecules is negligible as compared to the total volume of gas. | 3. The volume occupied by molecules is not negligible. |
| 4. There are no intermolecular forces of attraction or repulsion among the molecules. | 4. There are intermolecular forces of attraction due to which the pressure exerted is less than that calculated from gas laws. |
Short Answer TypeWhat are the faulty assumptions in the kinetic theory of gases which are responsible for deviations from ideal behaviour of gases?
What modifications were applied by Vander Waal to overcome the deviations of the gases from ideal gas behaviour?
Long Answer TypeWhat is the significance of the Vander Waal's constants? Write its units for Vander Waal's constants.
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