Question

Yeast converts glucose to ethanol and carbon dioxide during anaerobic fermentation as depicted in the simple...

Yeast converts glucose to ethanol and carbon dioxide during anaerobic fermentation as depicted in the simple chemical equation here:

glucose ⟶ ethanol + carbon dioxide

If 200.0 g of glucose is fully converted, what will be the total mass of ethanol and carbon dioxide produced? EXPLAIN YOUR REASONING! NO CREDIT WILL BE GIVEN FOR ANSWERS WITHOUT EXPLANATION.

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Answer #1

molar mass of C6H12O6 = 180 g/mol
number of mole of C6H12O6 = (given mass)/(molar mass)
= 200.0/180
= 1.11 mole

C6H12O6 --> 2C2H5OH + 2CO2
according to reaction
1 mole of ethanol give 2 mole of CO2 and C2H5OH
1.11 mole of ethanol give 2.22 mole of CO2 and C2H5OH

molar mass of C2H5OH = 46 g/mol
mass of C2H5OH = (number of mole of C2H5OH)*(molar mass of C2H5OH)
= 2.22*46
= 102.1 g
molar mass of CO2 = 44 g/mol
mass of CO2 = (number of mole of CO2)*(molar mass of CO2)
= 2.22*44
= 97.7 g

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