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Stoichiometry - Engineering

Q1:

Which of the following is the Claussius-Clayperon equation ?

A PV = RT + B/V + y/V2 + ....

B (P + a/V2)(V-b) = RT

C

D

ANS:C -

The Clausius-Clapeyron equation describes the relationship between the vapor pressure of a substance and its temperature during phase transitions, particularly the transition from the liquid phase to the vapor phase. The general form of the Clausius-Clapeyron equation is: 𝑑𝑃𝑑𝑇=Δ𝐻vap𝑇⋅Δ𝑉dTdP​=T⋅ΔVΔHvap​​ Where:

  • 𝑑𝑃𝑑𝑇dTdP​ is the rate of change of vapor pressure with temperature.
  • Δ𝐻vapΔHvap​ is the molar enthalpy of vaporization (heat of vaporization).
  • 𝑇T is the temperature in Kelvin.
  • Δ𝑉ΔV is the molar volume change upon vaporization.
The Clausius-Clapeyron equation is used to understand and predict how the vapor pressure of a substance