Talk:pH

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No mention of litmus?[edit]

Is there some reason for omitting litmus as a pH indicator? Vaughan Pratt (talk) 07:44, 23 September 2014 (UTC)

Dimensionless concentration[edit]

For all the attention given to minutae, to difference between pH and p[H] etc, this article forgets to address the basics. pH is negative logarithm of concentration... measured in what? cm^(-3)? mM? Similarly, later in the article, dissociation constant of water is stated to be 10^(-14). It may be common practice among chemists to omit stating concentration units when referring to mol/litre, but this is essentially jargon, and as such it should not appear in an encyclopaedic article on such a fundamental concept in chemistry! A physics teacher in me would give this article a solid "F" on this account alone. — Preceding unsigned comment added by 137.205.183.109 (talk) 16:11, 1 May 2015 (UTC)

Definition of pH is somewhat inaccurate[edit]

The definition of pH is the negative log of the activity of the proton. However, the article currently states that it is "more often expressed as the measure of the hydronium ion concentration." This is inaccurate- there is not a one-to-one mapping of hydronium ion concentration and pH. I understand the reason to include this phase- one wants the reader to develop physical intuition for pH, but this needs to be stated more clearly without the subtle implication that this is one-to-one. I would edit this page directly, but I haven't thought of an elegant way to say this without confusing the casual reader. Any thoughts, anyone?2601:A:2D80:5F:7CF1:AFAB:BF6:B5F6 (talk) 02:28, 15 May 2015 (UTC)Katie

Broken link[edit]

The chemical equilibrium#Computer programs link at the bottom of the page is missing, it links to the equilibrium page but there is nothing on computer programs. 147.69.44.14 (talk) 10:23, 19 May 2015 (UTC)