Which type of reaction produces ethanol and carbon dioxide from glucose, C6H12O6?
- Dec 28, 2025
- 1 min read
Regents Chemistry Exam August 2025 Question 45
45 Which type of reaction produces ethanol and carbon dioxide from glucose, C6H12O6?
(1) addition
(2) fermentation
(3) substitution
(4) polymerization
Solution:
Organic Reactions
Addition: You will recognize an addition reaction by seeing alkene (CnH2n) + X2 (X can be Cl, Br, I or F) on the reactant side.
Example: C3H6 + Cl2 → C3H6Cl2
Substitution: You will recognize substitution by seeing alkane ( CnH2n+2) + X2 (X can be Cl, Br, I or F) on the reactant side.
Example: C4H10 + Cl2 → C4H9Cl + HCl
Esterification: alcohol + organic acid ---> ester + water
Fermentation: In this reaction Glucose is on the reactant side and ethanol and carbon dioxide are on the product side. An enzyme such as zymase is used to speed up the reaction.
C6H12O6 ----> 2C2H5OH + 2CO2
Saponification: This reaction produces soap.
Fat + strong base ---> soap + glycerol
Polymerization: small identical molecules come together to make one big molecule.
Choice 2, fermentation is the correct answer choice.
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