How long does alcohol last for after the bottle been opened?!

Question:

How long does alcohol last for after the bottle been opened?

Let's say the top was kept on.

Additional Details

1 month ago
hard liquor 40%
75%

Answers:

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1 month ago
hard liquor 40%
75%

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most alcohol 20% or higher will last at least a year+ depending on what it is ,,but you're deffinatley SOL if its wine or champaign.

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what kind of alcohol? beer and wine only a few hours, liquor for much much longer

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Alcohol with the lid kept on should last until it's drunk.
They found 3000 a year old beer beer keg in Egypt.

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Indefinitely Hard liquor does not go bad, It will evaporate first.

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Distilled spirits will last longer than you will. Just keep the fruit flies out of it, but if they get in the bottle pour the product through a coffee filter to remove the OTB ( other than booze).

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