pH = -1 ???

[tgutberg]

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Hey
In one of kaplan's tests they say thay pH -1 is possible for an acid.
I said " what??? " i have never seen a negative pH
What do you guys say about that?

 

[Forum Lurker]

It's certainly possible. If you have a strong acid like HCl in a concentration of 10M, the acid could just about completely dissociate giving hydrogen proton concentration of 10M.

-log 10 = pH of -1