47 % :
Alcohol Yield
C6H12O6 ------> 2 C2H5OH + 2 CO2
1 Mol 2 Mol 2 Mol
180.16 g 2x46.05 g 2x44 g
51.1% 48.9%
actual observed yield: 47%
220 g/L sugar x 0.47 -----> 103.4 g/L = 10.3% ethanol
why only 47%?
Loss of ethanol use of C for building cells production of other products
(flavors!)
Alcoholic Fermentation Byproducts - CO2
The volume of CO2 produced is about 40 to 50 times larger than that of the
fermenting must.
1 Mol of CO2 is 22.4 L (180 g/L sugar (1 Mol) ---> 44.8 L)
CO2 is poisonous!!
3-4% breathing difficulties
10% severe shortage of breath, a burning candle extinguishes at 10% CO2
15% fainting, death
Alcohol Yield
C6H12O6 ------> 2 C2H5OH + 2 CO2
1 Mol 2 Mol 2 Mol
180.16 g 2x46.05 g 2x44 g
51.1% 48.9%
actual observed yield: 47%
220 g/L sugar x 0.47 -----> 103.4 g/L = 10.3% ethanol
why only 47%?
Loss of ethanol use of C for building cells production of other products
(flavors!)
Alcoholic Fermentation Byproducts - CO2
The volume of CO2 produced is about 40 to 50 times larger than that of the
fermenting must.
1 Mol of CO2 is 22.4 L (180 g/L sugar (1 Mol) ---> 44.8 L)
CO2 is poisonous!!
3-4% breathing difficulties
10% severe shortage of breath, a burning candle extinguishes at 10% CO2
15% fainting, death