As a sommelier and brewer, I can assure you that an open bottle of vodka will not evaporate at room temperature. Vodka, like any other alcohol, does not evaporate on its own at normal room temperatures. However, it is important to note that alcohol can evaporate when exposed to high temperatures.
The evaporation point of alcohol, including vodka, is around 174 degrees Fahrenheit (79 degrees Celsius). This means that if you were to heat up the vodka to this temperature, you would start to see the alcohol evaporating. However, under normal room temperature conditions, the alcohol content of the vodka will remain stable.
It is worth mentioning that the alcohol content of vodka is typically measured as a percentage by volume (ABV). For example, a bottle of vodka with 40% ABV means that it contains 40% pure alcohol and 60% water and other ingredients. This percentage remains constant unless the vodka is diluted or mixed with other liquids.
While the alcohol content of vodka will not change due to evaporation, it is possible for the flavor profile to be affected over time. This is because some of the more volatile compounds in vodka, such as esters and aldehydes, can slowly evaporate, leading to subtle changes in aroma and taste. However, these changes are generally minimal and may not be noticeable unless the vodka is left open for an extended period.
To preserve the quality of an open bottle of vodka, it is recommended to store it in a cool, dark place with the cap tightly sealed. This will help prevent any unnecessary evaporation and maintain the integrity of the vodka for a longer period.
An open bottle of vodka will not evaporate at room temperature. The alcohol content, measured as ABV, will remain stable. However, it is important to store the vodka properly to prevent any potential flavor changes over time.