I have some general questions (and more to come depending on the answers to my first "batch")...
A glass of pure water (pH 7), sitting on the kitchen bench, aerated.
My understanding is that small amount of CO2 will dissolve in the water...
CO2 + H20 = H2CO3 (Carbonic Acid).
So the water will end up with a very slightly acidic pH - just like how "acid rain" forms.
My question is - I understand that the H2CO3, weak acid, will form an associated conjugate base comprised of HC03 (Bicarbonate) and C03 (Carbonate).
In my simple example above, given that a small amount of Carbonic Acid will form, does this also mean that a small amount of Bicarbonate will form (but I guess no Carbonate due to the pH being low)?
So this would therefore mean that the water will have a very low natural Total Alkalinity due to the very slight carbonate hardness?
I know we are talking very small amounts here, but, nevertheless, is my understanding correct?