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!
To write a balanced combustion reaction for ethanol, C2H5OH, we need to ensure that there is an equal number of atoms of each element on both sides of the equation.
The combustion of ethanol can be represented by the equation:
C2H5OH(l) + 3O2(g) → 2CO2(g) + 3H2O(g)
Now, let's balance the equation:
C2H5OH(l) + 3O2(g) → 2CO2(g) + 3H2O(g)
For carbon (C), we have 2 on the left side and 2 on the right side, so it is balanced.
For hydrogen (H), we have 6 on the left side (2 from C2H5OH and 4 from 3H2O), and 6 on the right side (6 from 3H2O), so it is also balanced.
For oxygen (O), we have 8 on the left side (3 from O2 and 5 from CO2), and 8 on the right side (8 from 2CO2), so it is balanced as well.
Thus, the balanced combustion reaction for ethanol is:
C2H5OH(l) + 3O2(g) → 2CO2(g) + 3H2O(g)
Hope this helps!