Take the 2-minute tour ×  Using a hydrometer is great for most
people, but the geek in me would like to know the exact alcohol
content of my brew.  What would be the process, titration? And
what chemicals would I need?  share|improve this question add
comment  1 Answer  Obligatory Disclaimer: Though I do have some
formal education, I am by no means a professional chemist, so
please take my answer for what it is - semi-educated
speculation.  As you hinted, back titration is a popular method
of determining alcohol content in alcoholic beverages,
especially wine. It would make sense that a similar approach
could be used for calculating the alcohol content in your beer.
Ethyl alcohol has a boiling point of 78.4C. With this knowledge,
you could try something like the following:    1. Bring an
amount of your original liquid to just under 78C and measure
volume.   2. Bring the liquid to a steady ~79C, wait 15 minutes,
and re-measure volume.   3. Compare the original and final
volumes to determine the amount of ethy