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OpenStudy (anonymous):
Please help! So confused on how to solve this What is the pH of a solution with a concentration of 6.8 × 10-4 molar H3O+
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OpenStudy (aaronq):
\(\sf pH=-log[H_3O^+]\) the square brackets mean "concentration" in molarity units, that is "mol/L". So, to find the pH of a solution take the logarithm (base 10) of the concentration of the hydronium ion, \(H_3O^+\), then multiply by -1.
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