What is the pH of a sample with [OH-] = 2.5 x 10-11 M?

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Chemistry

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17 July, 08:06

What is the pH of a sample with [OH-] = 2.5 x 10-11 M?

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Rhys Deleon · Answer 1

The pH of the sample is 3,4.

Explanation:

We calculate the pOH from the formula pOH = - log (OH-). We know that for all aqueous solutions: pH + pOH = 14, and from there we clear pH:

pOH = - log (OH-) = 10,60

pH + pOH = 14

pH + 10,60 = 14

pH=14 - 10,60

pH=3,4