2.18 The Antoine equation predicts the effect of temperature on vapour pressure by the relation: B In Ps = A T -C where A, B, and C are Antoine constants. For water, the values of the constants when the vapour pressure is in kPa and temperature is in K are found to be A = 16.26205, B = 3799.887 and C = 46.854. What are these values when (a) Vapour pressure is in mm Hg and temperature in °C. (b) Vapour pressure is in psia and temperature in °F.

choose the correct answer

The following equation of state is found to describes the behavior of a particular gas with reasonable accuracy. Z = 1 + (a - b/T)P/RT where a=15x10-6 m3/mol and b= 0.06 (m3.K)/mol. Show that the residual enthalpy and residual entropy take the form: (H^r)/RT =(A-2B) and (S^r)/R = -B where A =(aP)/RT and B = (bP)/(RT^2)

How many intensive variables are necessary to completely specify the state of pure water and pure glycerol at temperatures above 18 degrees C. What are they? If the pressure is fixed at 1 bar, how many intensive variables are necessary?

A Stirling cycle is a thermodynamic cycle similar to the Carnot cycle and is defined by the following processes. -> 2: Isothermal expansion -> 3: isochoric cooling -> 4: isothermal heating -> 1: isochoric heating Solve the graph for  a Stirling cycle with the given information in which 50g of Ar (treated as an ideal gas) is isothermally expanded from 4L to 16L at a temperature of 700K. The sample is then undergoes isochoric cooling to 298K.  The sample is then isothermally compressed to 3L and finally undergoes isochoric heating back to 700K.