Question

09 question (1 point) yeast converts glucose (c₆h₁₂o₆) into ethanol (d = 0.789 g/ml) in a process called fermentation. an unbalanced equation for the reaction can be written as follows: c₆h₁₂o₆(aq) → c₂h₅oh(l) + co₂(g) 2nd attempt balance this fermentation reaction by adding the missing coefficients. c₆h₁₂o₆(aq) → c₂h₅oh(l) + co₂(g)

Explanation:

Step1: Balance carbon atoms

There are 6 carbon atoms in glucose ($C_6H_{12}O_6$). In ethanol ($C_2H_5OH$) and carbon - dioxide ($CO_2$), to have 6 carbon atoms on the product side, if we let the coefficient of $C_2H_5OH$ be 2 and the coefficient of $CO_2$ be 2, the number of carbon atoms on the product side is $2\times2 + 2\times1=6$.

Step2: Balance hydrogen atoms

In glucose, there are 12 hydrogen atoms. In 2 moles of $C_2H_5OH$, the number of hydrogen atoms is $2\times6 = 12$. So hydrogen atoms are balanced with the current coefficients.

Step3: Balance oxygen atoms

In glucose, there are 6 oxygen atoms. In 2 moles of $C_2H_5OH$ and 2 moles of $CO_2$, the number of oxygen atoms is $2\times1+2\times2 = 6$. So oxygen atoms are also balanced.

Answer:

$1C_6H_{12}O_6(aq)\longrightarrow2C_2H_5OH(l)+2CO_2(g)$