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  • What is the  of a <img alt="\mathrm{10^{-4}M \,\ OH^{-}}" src="/latex-image/?%5Cmathrm%7B10%5E%7B-4%7DM%20%5C%2C%5C

What is the pH of a \mathrm{10^{-4}M \,\ OH^{-}} solution at 330K, if at K_{W} at 330K is 10^{-13.6} ?

Option: 1

4


Option: 2

9.0


Option: 3

10


Option: 4

9.6


Answers (1)

best_answer

We know that, 

K_{w}=[H]^{+}.[OH]^{-}

\Rightarrow 10^{-13.6}=[H]^{+}.10^{-4}

\Rightarrow [H]^{+} = 10^{-9.6}

pH=-\log [H]^{+} = -\log10^{-9.6} =9.6

Posted by

vinayak

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