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what is a&b in vander waal's equation? |
For ideal gases, The Vanderwaal's equation is Pv = nRT. The modification of the ideal gas law, which also take into account of molecular size and molecular interaction forces.
The constants 'a' and 'b' have positive values and are characteristic of the individual gas. The vanderwaals equation of state approaches the ideal gas law Pv = nRT as the values of these constants approach zero. The constant 'a' provides a correction for the intermolecular forces. Constant 'b' is a correction for finite molecular size and its value is the volume of one mole of the atoms/molecules. |