Topic: Thermodynamics
Vander Waal's equation of state of a gas is
- A. $PV=nRT$
- B. $(p+\frac{a}{V^{2}})(v+b)=RT$
- C. $(p+\frac{a}{V^{2}})(v-b)=RT$
- D. $(p-\frac{a}{V^{2}})(v-b)=RT$
Answer: C. $(p+\frac{a}{V^{2}})(v-b)=RT$
Explanation: $(p+\frac{a}{V^{2}})(v-b)=RT$ where $\frac{a}{V^{2}}=$ Account for intermolecular force (force of cohesion), $a=$ account for existence of mutual attraction between the molecules, $b=$ Account of co-volume (volume of molecules), $R=$ Gas characteristic constant.