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The pH of a solution is 7.0. What is the pOH?

1 Answer

Jun 12, 2017

$pOH = 7.0$ $"pOH" = 7.0$

Explanation:

A fundamental equation to know regarding $pH$ $"pH"$ is that (near $25^{o} C$ $25^"o""C"$ ),

$pH + pOH = 14.00$ $"pH" + "pOH" = 14.00$

That is, near $25^{o} C$ $25^"o""C"$ , the sum of the $pH$ $"pH"$ and $pOH$ $"pOH"$ is always $14.00$ $14.00$ .

Therefore,

$pOH = 14.00 - pH = 14.00 - 7.0 = 7.0$ $"pOH"= 14.00 - "pH" = 14.00 - 7.0 = color(red)(7.0$

Since the $pH$ $"pH"$ and $pOH$ $"pOH"$ are equal, this solution is said to be neutral; i.e. it is neither acidic nor alkaline (basic).

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