Real gas and van der waal equation ppt.pptx

all real gas topic are cover

1. Real gas and van der waal equation

2. Introduction to Real Gases: Real gases deviate from ideal behavior under certain conditions. They possess volume and experience intermolecular forces.

3. 3 Characteristics of Real Gases: Particle volume and intermolecular forces are considered. Molecules have finite size, leading to deviations from ideal gas behavior.

4. Deviations from Ideal Gas Law: 4 Deviations from Ideal Gas Law: Factors causing deviations: volume occupied by gas particles and intermolecular forces. At high pressures and low temperatures, deviations are more pronounced.

5. Van der Waals Equation: Presentation title 5 Proposed by Johannes Diderik van der Waals in 1873. Correction to the ideal gas law to account for particle size and intermolecular forces. Equation: (P + a(n^2/V^2))(V - nb ) = nRT

6. Components of Van der Waals Equation: 'a' corrects for attractive forces between gas molecules. 'b' adjusts for the volume occupied by gas molecules.

7. Interpretation of Constants: 7 'a' is related to molecular attraction. 'b' is related to molecular size or volume. Application and Significance: Useful in explaining deviations of real gases from ideal behavior. Used in calculations involving non-ideal gas behavior.

8. Limitations: Simplified assumptions; does not encompass all complexities. Not applicable in extreme conditions (very high pressures, very low temperatures).

9. Conclusion: 9 The van der Waals equation offers an improved understanding of real gas behavior. Serves as a valuable tool in chemical and physical calculations. References: The volume of a Real gas is given as ( Vm -b) , Where b is the volume occupied per mole .