Answer:
pH = 5.9
Explanation:
The equation to find pH is as follows:
pH = -log[H+]
We are not given [H+] so we have to find it given the value of [OH-].
To find [H+] from [OH-], use this equation:
[tex][H^{+} ]=\frac{1.0*10^{-14} }{[OH^{-}] }[/tex]
Plug in [OH-] and solve for [H+]:
[tex][H^{+} ]=\frac{1.0*10^{-14} }{7.1*10^{-9} }[/tex]
[H+] = [tex]1.41 * 10^{-6}[/tex]
Now that we have found [H+] plug it into the pH equation and solve:
[tex]pH =-log(1.41*10^{-6} )[/tex]
pH = 5.9
So, the pH of the solution would be 5.9
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