The value of Van Der Waals constant 'b' for Hydrogen gas is?
Correct answer: A. 0.266
- A. 0.266
- B. 0.366
- C. 0.318
- D. 0.562
Explanation
Van Der Waals forces is a general term used to define the attraction of intermolecular forces between molecules. The Van der Waals equation is an equation relating the relationship between the pressure, volume, temperature, and amount of real gases. For a real gas containing 'n' moles, the equation is written as;(P + an²/V²) (V - nb) = nRTWhere P, V, T, and n are the pressure, volume, temperature, and moles of the gas, respectively, and 'a' and 'b' constants specific to each gas.The value of constant 'b' for Hydrogen gas is 0.266.
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About Real and Ideal Gases
An ideal gas is modelled as particles with negligible volume and no intermolecular attraction, obeying Boyle's, Charles's and Avogadro's laws through PV = nRT. Real gases deviate from this behaviour, especially at high pressure and low temperature, because particle volume and attractive forces matter; the van der Waals equation explains these corrections.
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