So let me get this straight:
Alkanols, when exposed to oxygen gas, gradually become carboxylic acid.
There is oxygen gas in the air, so this happens naturally.
And carboxylic acids automatically react with alkanols to form esters!
So is there is like a 'chain' of things that happen, with carboxylic acid only being like a temporary thing?
And when is the term 'ester' used? It seems to be redundant to saying the 'alkanol and carboxylic acid' and calling them as bonded together with an ester bond. It does react after all.