Homework Help: chemistry 12

Posted by Mike on Thursday, October 13, 2011 at 12:37pm.

The pH of a certain acid having a concentration of 0.20M was measured. The pH was 2.50.
Was this a strong acid or weak acid?

chemistry 12 - DrBob222, Thursday, October 13, 2011 at 1:16pm
If the acid were a strong acid, the pH would be pH = -log(H^+) = -log(0.2) = about 0.7 and it is 2.50; therefore, it must be a weak acid.

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