Fermentatation and Distillation of Ethanol 1. a. Calculate the volume of ethanol

Question

Fermentatation and Distillation of Ethanol

1. a.     Calculate the volume of ethanol contained in the distillate.

b.     What is the overall volume of ethanol in the 100 mL sidearm flask?

c.     A 2-lb bag of sugar costs about $2.99. Based on the volume of ethanol per 50 grams of sucrose obtained in the experiment, how much will it cost to produce the necessary volume of ethanol needed to manufacture twelve 750-mL bottles of wine with 11% v/v ethanol content?

Data:

1. Volume of distillate = 5.25 mL

2. % ethanol in the distillate via GC = 6.00%

Explanation / Answer

a. Volume of ethanol in the distillate= 0.06*5.25 ml= 0.315 ml

b. Overall volume in 100 ml = 6% = 6 ml.

c. Total volume of wine: 750*12= 9000 ml

Volume of ethanol in total wine: 9000*0.11= 990 ml

1 mole of sucrose produces 4 moles of ethanol

Partial mola volume of ethanol is 58 ml/mol

900 ml would correspond to : 900/58 = 15.5 moles

Moles of sucrose required: 15.5*4= 62 moles = 62*342 gm=21204 gms= 46.74 lbs = $ 7.81

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