At a particular temperature, mixtures of iodoethane (I) and ethyl acetate (A) we

ID: 1070884 • Letter: A

Question

At a particular temperature, mixtures of iodoethane (I) and ethyl acetate (A) were determined to have vapor pressures given by the following expressions:

P =? a x +? b x2 +? c x3 with aI = 501 Torr, bI = -276 Torr, cI = 127 Torr IIIIIII

P= ? a x +? b x2 +? c x3 with aA = 423 Torr, bA = -289 Torr, cA = 147 Torr AAAAAAA

What are the Raoult’s law and Henry’s law constants for iodoethane (I) and ethyl acetate (A)?

For iodoethane, Raoult's law constant PT PICI 1) (501 -276 127 Torr 352 Torr dP a 501 Torr lim XI-30 dx

Explanation / Answer

for ethyl acetate, P2*(X2=1) . =423-289+147 =281 Torr

Henrys law constant is applied for diute solution and hence as the solution becomes dilute (i.e x1=0)

dP/dx(as x--->0 )= a = 501 for iodoethane

for the same reason Henrys law constant for ethylacetate= 423 Torr ( constant a in the equation)

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At a particular temperature, mixtures of iodoethane (I) and ethyl acetate (A) we

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