DATA AND CALCULATION: Data – 1:
Weight of round bottom flask
=101.226 gm
Weight of round bottom flask + Sample=239.030 gm Weight of sample = 137.804 gm. Weight of conical flask = 105.395 gm Weight of conical flask + condensate= 135.301 gm Weight of round bottom flask + residue = 203.247 gm Weight of residue in round bottom flask = 102.021 gm Weight of condensate in conical flask = 34.075 gm Room temperature = 280c
Data – 2:
First drop of distillate at 67.50c Constant distillation at 690c Distillation stopped at 1000c Data – 3:
Refractive index of distillate = 1.336
Calculation: Table: Material balance for simple distillation of methanol-water mixture. Input Material
CH3OH - H2O mixture Total
Weight (gm)
137.804
137.804
Output Wt./Wt. % 100
100
Material
Weight (gm)
Wt./Wt %
Distillate
34.075
24.73
Residue
102.021
74.03
Loss
1.708
1.24
137.804
100