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clc
clear
printf("example 3.8 page number 96\n\n")
//to find the amount of water in residue
vp_water = 31.06 //in kPa
vp_benzene = 72.92 //in kPa
P = vp_water +vp_benzene;
x_benzene = vp_benzene/P;
x_water = vp_water/P;
initial_water = 50/18; //in kmol of water
initial_benzene = 50/78 //in kmol of benzene
water_evaporated = initial_benzene*(x_water/x_benzene);
water_left = (initial_water - water_evaporated);
printf("amount of water left in residue = %f kg",water_left*18)
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