Re: pH of a solution after diluting

On May 29, 12:29 am, Bob <bbx107....@xxxxxxxxxxxxxx> wrote:
On Wed, 28 May 2008 20:01:59 -0700 (PDT), Father Haskell

<fatherhask...@xxxxxxxxx> wrote:
Does diluting a solution change its pH?

Depends on the solution, and depends on whether you want an idealized
answer or a real one.

Solution = aerated vermicompost tea, tested with
bromothymol blue fish tank indicator. Good quality
tea will be cloudy, which might make reading difficult.
Dilution will reduce turbidity, and hopefully yield a more
easily discernible pH.

Diluting a solution of a strong acid, say 0.1 M HCl, would be expected
to change the pH. The solution is now 0.01 M HCl.

For a buffer, one might not expect an effect, but small effects may
occur.

Not much pH difference between stock and diluted tea.
Both read as a nearly ideal 6.8 - 7.2 pH.

.