One must understand the concept of buffering to realize that this question
has no simple answer.  If you were to add a few grains of salt, it might
take 100 times as much  as it would if the water were distilled to a fairly
high purity.

Do we have any chemists here that can clarify this better?

Marshall

[email protected] wrote:

> How much dissolved CO2 would it take to produce a pH in the 4-5 range?
>
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