Alcohol by Volume Explained

[@MrVipulLal]

Very clear explanation. Thanks!

[@omi1468]

I'm a Mechanical engineer. Deal with materials to be used according to applications. I kept wondering for quite few months that, "Why all test results by mills measure the alloying content by weight% always and never by volume%?" Today I got the complete satisfactory answer to my doubt. All of this is really very interesting, because people like you make it so. Thank you, sir🙏

[@leocurious9919]

Just measuring the volume of liquids and gasses is already harder than mass, that alone is enough reason to use mass. But for solids it is really hard to measure volume, so using it there is crazy. And if you do, then you get a lot of different numbers for different contexts: With or without the voids in-between the solid (pure density, bulk density) and also with the pore volume for different pore sizes (solids almost always contain pores inside the individual particles).

[@rpgenious]

Okay so as you showed, the excess volume increases (the negative decreases) as you increase the temperature. Could it be that it turn to positive excess at a certain temperature? I wouldn't be surprised. We all know alcohol has an azeotropic point at around 94%. Why is that? It's because the mixture has a lower boiling point that of the pure alcohol. Lower boiling point means higher vapor pressure. So a 94% alcohol-water solution has a higher (!) vapor pressure than the sum of the pure substances. That is a positive excess property.

[@robertbradfield8656]

That was lovely 🙌

[@ItatiaiaBR]

Nice video.

[@panoskb9405]

Very nice video as always!!?

[@eronpaulo23]

Great!

[@muhammadaliejaz2]

You are very good

[@ProcesswithPat]

I’m just stubborn!

[@petermartin1954]

So if you cool your drink down, it contains less alcohol! That means you can drink more cold beer😂