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Chemical Engineering Thermodynamics

1
o obtain integrated form of Clausius-Clayperon equation, In` P_2/P_1 = (Delta^H V)/(R) [ 1/T_1 - 1/T_2]`, from the exact Clayperon equafion, it is assumed that the 
A. volume of the liquid phase is negligible compared to that of vapour phase.
B. vapour phase behaves as an ideal gas
C. heat of vaporisation is independent of temperature.
D. all (a), (b) & (c).
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2

Joule-Thomson co-efficient is defined as

A. `mu =( (partial P)/(partial T))_H`
B. `mu =( (partial T)/(partial P))_H`
C. `mu =( (partial E)/(partial T))_H`
D. `mu =( (partial E)/(partial P))_H`
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3

The equilibrium constant for a chemical reaction at two different temperatures is given by

A. `(KP_2)/(KP_1) = - (Delta H)/(R) (1/T_2 - 1/T_1)`
B. `(KP_2)/(KP_1) = (Delta H)/(R) (1/T_2 - 1/T_1)`
C. `(KP_2)/(KP_1) = - (Delta H) (1/T_2 - 1/T_1)`
D. `(KP_2)/(KP_1) = - (1)/(R) (1/T_2 - 1/T_1)`
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4

Which of the following represents the Virial equation of state ?

A. `T = (RT)/(V - b) - (a)/(sqrt(T). V(V+b))`
B. `(PV)/(RT) = 1 + B// V + C// V^2 + ...`
C. `(P + a/V^2) (V - b) = RT`
D. `n_1 u_2 + mu_1 mu_2 = 0`
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5

Charles' law for gases states that


A. `V/T`= constant
B. `V prop 1/T`
C. `V prop 1/P`
D. `(PV)/(T) `= constant
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