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Published byAshley May Modified over 8 years ago

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pH scale Measures the amount of H + in a solution. Scale used to measure whether a substance is an acid or a base. Lower numbers are acids. Higher numbers are bases

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Examples Which of the following pH values represents the strongest acid? A) 12.0 B) 9.0 C) 2.0 D) 7.0 Which of the following pH values represents the weakest base? A) 12.0 B) 9.0 C) 2.0 D) 7.0

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pOH scale Measures the amount of OH - in a solution. The pH and pOH scales are related by the following equation. pH + pOH = 14 Ex: What is the pOH of a solution if its pH is 4? Is it an acid, base, or neutral? Ex: What is the pH of a solution if the pOH is 9? Is it an acid, base, or neutral?

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