Term
ClausiusClapeyron Equation***look up in lecture 

Definition
ln(p*) = (heat of vaporization per mole)/(R*T) + B
where ln(p*) is y
(1/T) is x
(heat of vap. per mole)/R is m
also: ln(P2)ln(P1) = ((Hvap)/R)*((1/T1)(1/T2))



Term
Delta Heat of Sublimation 

Definition
Delta Heat of Sublimation = Delta Heat of Fusion + Delta Heat of Vaporization 


Term

Definition
log10(p*) = A  (B/(T+C))
were T is in degrees C and p* is in mmHg 


Term

Definition
DF = The number of independent intensive properties that must be specified to determine all other intensive properties for a system.
DF = 2 + C  pi  r
C = number of chemical species
pi = number of phases in a system at equilibrium
r = independent reactions of system components 


Term

Definition
Does not depend on the size of the system: e.g. temperature, pressure, specific volume, density, or mole fraction 


Term

Definition
when p(i) = y(i)*P < p*(i)(T) 


Term

Definition
The difference between the temperature and the dew point of the gas 


Term

Definition
The temperature at which the vapor becomes saturated. 


Term
Raoult's Law for a Single Condensable Species 

Definition
p(i) = y(i)*P = p*(i)(T)
partial pressure of the substance = the vapor pressure of the substance at that temperature 


Term

Definition


Term
Relative Saturation/
Relative Humidity 

Definition
(sr or hr) = (pi/p*i(T))*100% 


Term
Molal Saturation/
Molal Humidity 

Definition
(sm or hm) = (pi/(Ppi)) = moles of vapor/ moles of vaporfree (dry) gas 


Term
Absolute Saturation/
Absolute Humidity 

Definition
(sa and ha) = (pi*Mi)/((Ppi)Mdry) =
mass of vapor/mass of dry gas 


Term
Percentage Saturation/
Percentage Humidity 

Definition
(sp or hp) = (pi/(Ppi))/(p*i/(Ppi*)) * 100% 


Term

Definition


Term

Definition
Applies to ideal solutions
applies to real solutions if xi approaches 1
also for solutions of substances with similar MWs and structures 


Term

Definition
pa = ya*P = xa*Ha
where Ha is a constant
valid for solutions were xa is close to 0, dilute solutions 


Term

Definition


Term

Definition
yi = pi.P(dp) = (xi.p*i(T)/P(bp)) 


Term

Definition
xi = (yi.P)/(p*i(Tdp))
where i = A,B,C..excluding G 


Term

Definition
Pdp = 1/[(ya/p*a(T)) + (yb/p*b(T))+...] 


Term

Definition
delta(Tb) = [(R*T(bo)^2)/Hv]*x 


Term

Definition
delta(Tb) = [(R*T(mo)^2)/Hm]*x



Term
Distribution Coefficient
(e.g. chloroform/water) 

Definition
K = (x)c phase/(x)w phase
x = mass fraction of solute 


Term
Equilibrium of 2 partially miscible solvents/
LiquidLiquid Extraction 

Definition
if two product streams are in equilibrium, their compositions must lie on the phase envelope and must be connected by a tie line 


Term
Langmuir Adsorption Isotherm 

Definition
xi = a.K.pi/(1+ K.pi)
xi = grams adsorbate/grams adsorbent
pi= partial pressure of adsorbate
a,K are constants
adsorbate = component attracted to the solid surface of the adsorbent 


Term

Definition

