Caloric content of wine

6021023

1. The problem statement, all variables and given/known data
The heat of combustion of ethanol,C2H5OH(l}, is -1367kJ/mol. A batch of Sauvignon Blanc wine contains 10.6% ethanol by mass.

Assuming the density of the wine to be 1.0g/mL, what caloric content does the alcohol (ethanol) in a 6-oz glass of wine (177 mL) have?


2. Relevant equations
1 J = 4.184 Cal


3. The attempt at a solution
(177).106 = 18.762g of ethanol
Molecular weight of ethanol = 46.06844 g/mol
18.762/46.06844 = 0.40726 = mol
.40726 * -1367 * 1000 = -556729 J
-556729*4.184 = -2329355 Cal

Borek

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