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Determine the dimentions of a & b in wanderballs eqn. For gas.. (P+a/v2)(v-d)=rt, obtain the dimensional formula for a/b, identify the quantity

represented by a/b? P= pressure, v= volume , t= temp, r= gas constant.
Van der Waal 's equation. not wanderball.



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( P + a / V² ) ( V - b ) = R T        is a simplified Van Der Wall 's fluid or gas equation  for one mole

a has dimensions  P V²  =  M L^-1 T^-2  L^6  = M L^5 T^-2
b has dimensions =  Volume = L³

a / b has dimensions of  P V    ie., =  energy or work done =  M L^2  T^-2

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