Van Der Waals EOS Shortcomings & Corrections

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Krishna0703
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what are the main drawbacks of the van der waals equation of state for real gases and how are they corrected?
 
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I have successfully used the van der Waals equation of state for numerous practical calculations that don't require extreme accuracy. Considering ease-of-use, it is one of the better mechanistic models available.
 


hey dudes..sure there are some drawbacks...concerning roots n so on..but am unable to find more info on that topic..if someone has more info..please do share...thanks in advance