What is a solution considered when it has an equal number of hydrogen and hydroxide ions?

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1 Answer
anor277
Sep 6, 2016

It is considered to be neutral with respect to #pH#.

Explanation:

#2H_2O rightleftharpoons HO^(-) + H_3O^+#

As you know, water undergoes autoprotolysis as represented in the given reaction. Under standard conditions, #[HO^-]=[H_3O^+]#, which specifies a condtion of neutrality. To put numbers to this equation, #K_w=[H_3O^+][""^(-)OH]=10^-14#.

How do I use this equation to define #pH#?

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