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Calculate the pH of a solute where 24.5 mL of 0.1 mol/L HCl is added to 25.0 mL of 0.1 mol/L NaOH.

How much excess OH is there? .5ml .1M or
5E-5 moles. That is in a volume of 49.5ml

So if OH concentration is that moles/volume, what is the H+ concentration? Remember the product is 1E-14.

I get a pH of almost 11

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