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Alcohol by volume (abbreviated as alc/vol or ABV) is a standard measure of the volume of alcohol contained in a given volume of an alcoholic beverage, expressed as a volume percent. [ 1 ] [ 2 ] [ 3 ] It is defined as the number of millilitres (mL) of pure ethanol present in 100 mL (3.5 imp fl oz; 3.4 US fl oz) of solution at 20 °C (68 °F).
A large (250 ml) glass of 12% ABV red wine has about three UK units of alcohol. A medium (175 ml) glass has about two UK units. A "medium" glass (175 ml (5.9 US fl oz) of 12% ABV wine contains around 2.1 units of alcohol. However, British pubs and restaurants often supply larger quantities (large glass ≈ 250 ml (8.5 US fl oz)), which contain ...
1/2 Wine oz. 14.78 mL: 15 mL: 1/32 of a Wine Pint. Obsolete with the introduction of Imperial measures in 1826. 1 ⁄ 6 Gill (Imp.) 5 ⁄ 6 imp fl oz: 23.7 mL: 25 mL: Legal serving of spirits (gin, rum, vodka and whisky) defined in the Weights and Measures Act of 1963 (1963-1984). Rounded up to 25 mL in 1985.
Refers to the alcohol content of a beverage. In the United States, proof represents twice the alcohol content as a percentage of volume. Thus, a 100 proof beverage is 50% alcohol by volume and a 150 proof beverage is 75% alcohol. In the Imperial system, proof, (or 100% proof), equals 57.06% ethanol by volume, or 48.24% by weight.
Alcohol proof (usually termed simply "proof" in relation to a beverage) is a measure of the content of ethanol (alcohol) in an alcoholic beverage. The term was originally used in England and from 1816 was equal to about 1.75 times the percentage of alcohol by volume (ABV). The United Kingdom today uses ABV instead of proof.
One Be° is equal to 1.8 °Bx, that is 1.8 grams of sugar per one hundred grams. Therefore, to achieve one percent alcohol the winemaker adds sugar at a rate of 1.8 grams per 100 ml (18 grams per liter) – a practice known as chaptalization, which is illegal in some countries and in California.
They range from those of water at very low concentrations approaching 0% HCl to values for fuming hydrochloric acid at over 40% HCl. [31] [32] [33] Hydrochloric acid as the binary (two-component) mixture of HCl and H 2 O has a constant-boiling azeotrope at 20.2% HCl and 108.6 °C (381.8 K; 227.5 °F).
This improper name persists, especially in elementary textbooks. In biology, the unit "%" is sometimes (incorrectly) used to denote mass concentration, also called mass/volume percentage. A solution with 1 g of solute dissolved in a final volume of 100 mL of solution would be labeled as "1%" or "1% m/v" (mass/volume). This is incorrect because ...