On: 2+1=4, by quinoa

[jld]

I was just talking to a friend about how 1 part water plus 1 part ethanol becomes 1.92 parts solution.

This raised a question for me that I have yet to research/answer. Maybe one of you knows... if the above solution is 50% ABV, what happens if I add one more part alcohol to the solution? Is it now 66.6% ABV? More? Less? How does ABV take into account the fact that this solution is packed together tighter than its constituent parts?

[tedunangst → jld]

The wikipedia article has all the charts and formulas you need. https://en.wikipedia.org/wiki/Alcohol_by_volume

(To make the above solution 50% abv, btw, you need to keep adding water until it's 2 (liters, whatever) total volume.)

[riffraff → jld]

This is a common issue for people doing liquors at home: you mix 1l of alcohol which you used to extract some flavour with 1l of water and don't get back 2l.

[tkeAmarktinClss → jld]

Thank you for being the best of HN.

The muderation might be awful, but the users are sharp.

Learned something new, and I'm a chem grad.