In winemaking, the sugars in grapes undergo fermentation by yeast to yield CH3CH2OH and CO2. During cellular respiration, sugar and enthanol are "burned" to water vapor andCO2.
Write a combustion reaction for ethanol.
I need help with balancing the equation
i think it's
C2H6OH(l) + 3O2(g) ---> 2CO2(g) + 3H2O(g)
am I correct?..thanks!•chemistry - paul, Sunday, October 25, 2015 at 3:06pm
looks good to me, except the C2H6OH should be C2H5OH.
comment:
I did that, but it said...try again!
then it said HINT:
Start by writing a balanced chemical equation for the fermentation reaction of C6H12O6 and for the respiration reaction (combustion) of C6H12O6...what formula should be used to find the standard enthalpy of a reaction? Use the standard enthalpy of formation values from your textbook when calculating the standard enthalpy of reaction for both fermentation and respiration. thanks!
See this site. Zymase is just a catalyst.
https://en.wikipedia.org/wiki/Ethanol_fermentation
To balance the combustion reaction for ethanol (C2H5OH), we need to make sure that the number of atoms for each element is the same on both sides of the equation. Here's how you can balance the equation:
C2H5OH(l) + O2(g) → CO2(g) + H2O(g)
First, let's balance the carbon atoms:
C2H5OH(l) + O2(g) → 2CO2(g) + H2O(g)
Next, let's balance the hydrogen atoms:
C2H5OH(l) + O2(g) → 2CO2(g) + 3H2O(g)
Finally, let's balance the oxygen atoms:
C2H5OH(l) + 3O2(g) → 2CO2(g) + 3H2O(g)
So, the balanced combustion reaction for ethanol is:
C2H5OH(l) + 3O2(g) → 2CO2(g) + 3H2O(g)
The reaction shows that when ethanol reacts with oxygen, it produces carbon dioxide and water.