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Explain the physical significance of van...

Explain the physical significance of van der Waals parameters.

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.a. and .b. are constant in Van der waal equation.
Vaslue of a is related intermolecular forces of gas.
Value of a increases with intermolecular force and real pressure shows more ideal pressure.
Vasn der waal.s constant .b. shows correction observed in value (V).
Value of b increases with volume of molecule. Value of .b. shows more deviation in volume than volume of Ideal gas.
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