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An amphoteric substance is one that can act as an acid or as a base, depending on pH. Water (below) is amphoteric. Water (below) is amphoteric. Another example of an amphoteric molecule is the bicarbonate ion HCO − 3 that is the conjugate base of the carbonic acid molecule H2CO3 in the equilibrium
When two or more sites in an asymmetrical molecule may be involved in an equilibrium reaction there are more than one possible equilibrium constants. For example, the molecule L-DOPA has two non-equivalent hydroxyl groups which may be deprotonated. Denoting L-DOPA as LH 2, the following diagram shows all the species that may be formed (X = CH 2 ...
Alcohol does not necessarily kill brain cells. [376] Alcohol can, however, lead indirectly to the death of brain cells in two ways. First, in chronic, heavy alcohol users whose brains have adapted to the effects of alcohol, abrupt ceasing following heavy use can cause excitotoxicity leading to cellular death in multiple areas of the brain. [377]
In Minnesota, non-alcoholic beer (less than 0.5% ABV) does not fit in the category that the state defines as an alcoholic beverage and can be purchased by those under the legal drinking age. [45] In Wisconsin, the law does not regulate non-alcoholic beer (less than 0.5% ABV), which can be purchased without any age restriction. [46]
When the acidic medium in question is a dilute aqueous solution, the is approximately equal to the pH value, which is a negative logarithm of the concentration of aqueous + in solution. The pH of a simple solution of an acid in water is determined by both K a {\displaystyle K_{{\ce {a}}}} and the acid concentration.
Heineken 0.0 launched globally in 2017 before making its way to U.S. markets in January 2019 -- but based on the growing demand for low-alcohol beverages, Heineken 0.0 is on track to be a top ...
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Quickly drinking 1.5 L of 0.4% alc/vol beer in an hour resulted in a maximum of 0.0056% BAC in a study of German volunteers. [8] Healthy human kidneys can only excrete 0.8–1.0 L of water per hour, making water intoxication likely to set in before any alcoholic intoxication. [9]