Which equation is not an equation of state ?
Correct answer: C. loge (p/p0) = (λ/R) (1/T0 - 1/T)
- A. PV = RT + B/V + y/V2 + ....
- B. (P + a/V2)(V-b) = RT
- C. loge (p/p0) = (λ/R) (1/T0 - 1/T)
- D. p = [RT/(V - b)] - (a/TV2)
Explanation
The virial equation and van der Waals-type equations relate pressure, volume and temperature, so they are equations of state. The logarithmic relation is a vapour-pressure equation derived from the Clapeyron or Clausius-Clapeyron relation, not an equation of state.
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