States of Matter - Result Question 47
####48. In van der Waal’s equation of state for a nonideal gas, the term that accounts for intermolecular forces is :
(a) $(V-b)$
(b) $(R T)^{-1}$
(c) $(P+\frac{a}{V^{2}})$
(d) $R T$
[1990]
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Solution:
- (c) van der Waal’s equation for 1 mole:
$(P+\frac{a}{V^{2}})(V-b)=R T$
Here, $(P+\frac{a}{V^{2}})$ represent the intermolecular forces and $(V-b)$ is the corrected volume.
