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![\large{\boxed{\bold{pH=-log [H^+]}}}](/tpl/images/0952/9767/79fcc.png)
![\tt pH=-log[1\times 10^{-4}]\\\\pH=4\\\\pH+pOH=14\\\\pOH=14-4\\\\pOH=10](/tpl/images/0952/9767/6ca9c.png)
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