I have a system that has 5M aluminum hydroxide (10 molecules) ion [Al(OH)4]- and 5M NaOH (10 molecules) in a box of side length 15 angstroms each. I have 113 water molecules in the system, so that the density of water is consistent with 1g/cc. I need a way to find the pH of the simulation. I tried calculating it by counting the H+ ions, but that gave me a value of ~1.2, which did not really make sense.
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