Mathematical equations used in chemistry.

Quantification of alcohol consumption

There are calculations that we can use to measure the degree of alcohol in alcoholic beverages or, in the same way, measurements to calculate how much people consume as well as the units to calculate how much each individual consumes

Tabla 1 (Elsevier España S.L.U. © 2021, 2021)

Quantification of standard drink units (UBE)
Units of alcohol
1 UBE	1 small glass of wine (100 ml). 1 beer (200 ml or a fifth). Half a glass of cognac or similar (25 ml). 1 sherry, cava or vermouth (50 ml). 1 carajillo (25 ml)
2 UBE	1 glass of wine (200 ml). 1 glass of cognac or similar (50 ml). A free-vat or similar (50 ml). 1 whiskey or similar (50 ml).

The operation consists of heating a 200ml sample to completely evaporate the alcohol and water. Then the vapors are cooled and condensed to obtain the distillate. This same will be used to perform a density test with the alcoholometer to determine the degree of alcohol.

Alcoholic graduation is expressed in degrees and measures the absolute alcohol content in 100 cm3, that is, the percentage of alcohol that a drink contains; In other words, a wine that has 13 proofs, means that 13 cm3 of every 100 cm3 are absolute alcohol, that is, 13%. The alcoholic degree is expressed on the containers as (°) or as vol%.

To calculate the content in grams of an alcoholic beverage, it is enough to multiply the degrees of it by the density of the alcohol (0.8).

The formula would be:

Grams of alcohol = volume (expressed In c.c.) x graduation x 0,8

100

In other words, if a person consumes 100 c.c. of a 13 proof wine, the amount of absolute alcohol ingested is:

100 c.c. x 13 x 0,8 = 10,4 gr pure alcohol.

  100

Calculation of grams of alcohol: cc or ml × graduation × 0.8 / 100 1 EBU = 10 g of alcohol. Example: if a person consumes 100 ml of a 13 proof wine, he has ingested: 100 × 13 × 0.8 / 100 = 10.4 g of pure alcohol (approximately 1 SBU). Therefore: 1 UBE = 10 g of pure alcohol = 100 ml of 13 proof wine. (Elsevier España S.L.U. © 2021, 2021) Tabla 2 (Elsevier España S.L.U. © 2021, 2021)
	Operational criteria for alcohol consumption.
		Man UU/week	Woman UU/week
	Low risk consumption	<17	<11
	Dangerous consumption	17-27	11-16
	Risk drinking / risk drinker *	≥28	≥17