When yeast is added to a solution of glucose or fructose,...

When yeast is added to a solution of glucose or fructose, the sugars are said to undergo fermentation and ethyl alcohol is produced. $$\mathrm{C}_{6} \mathrm{H}_{12} \mathrm{O}_{6}(a q) \rightarrow 2 \mathrm{C}_{2} \mathrm{H}_{5} \mathrm{OH}(a q)+2 \mathrm{CO}_{2}(g)$$ This is the reaction by which wines are produced from grape juice. Calculate the mass of ethyl alcohol, $\mathrm{C}_{2} \mathrm{H}_{5} \mathrm{OH},$ produced when 5.25 $\mathrm{g}$ of glucose, $\mathrm{C}_{6} \mathrm{H}_{12} \mathrm{O}_{6},$ undergoes this reaction.

When yeast is added to a solution of glucose or fructose, the sugars are said to undergo fermentation and ethyl alcohol is produced.
$$\mathrm{C}_{6} \mathrm{H}_{12} \mathrm{O}_{6}(a q) \rightarrow 2 \mathrm{C}_{2} \mathrm{H}_{5} \mathrm{OH}(a q)+2 \mathrm{CO}_{2}(g)$$
This is the reaction by which wines are produced from grape juice. Calculate the mass of ethyl alcohol, $\mathrm{C}_{2} \mathrm{H}_{5} \mathrm{OH},$ produced when 5.25 $\mathrm{g}$ of glucose, $\mathrm{C}_{6} \mathrm{H}_{12} \mathrm{O}_{6},$ undergoes this reaction.

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Key Concepts

Balanced Chemical Equation

A balanced chemical equation represents the conservation of mass in a reaction by showing the exact ratio of reactants and products. In this context, the equation C6H12O6 ? 2 C2H5OH + 2 CO2 indicates that one mole of glucose yields two moles of ethyl alcohol, making it essential for stoichiometric calculations.

Stoichiometry

Stoichiometry involves calculating the relationships between the quantities of reactants and products in a chemical reaction. It relies on the mole ratio derived from the balanced chemical equation to convert between mass, moles, and molecules, which is crucial for determining the mass of ethyl alcohol produced from a known amount of glucose.

Fermentation

Fermentation is a metabolic process in which sugars such as glucose are converted into energy, resulting in by-products like ethyl alcohol and carbon dioxide. In alcoholic fermentation, yeast acts as a catalyst to transform glucose into ethanol, a process commonly used in making wine, beer, and other alcoholic beverages.

Molar Mass

Molar mass is the mass of one mole of a chemical compound and is calculated by summing the atomic masses of all the atoms in its molecular formula. It serves as a conversion factor to translate between the mass of a substance and the number of moles, enabling the computation of product yield in a reaction.

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