Question

# At high pressure, the van der Waal's equation is reduced to :

A
(P+n2aV2)=nRT
B
P(Vb)=nRT
C
P(Vnb)=nRT
D
PV=nRT

Solution

## The correct option is C $$P(V-nb)=nRT$$According to vander waal's equation,$$\left [P+\dfrac {n^2a}{V^2}\right ][V-nb]=nRT$$At high pressure, $$a/V^2$$ can be neglected in comparison to $$P$$ so equation becomes :$$P[V-nb]=nRT$$ $$PV=nRT+nPb$$$$PV > nRT$$Chemistry

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