Calculate the pH of a solution that has =OH−×5.710−5M. Round your answer to 2 decimal places.Note: Reference the Fundamental constants table for additional information.
Question
Calculate the pH of a solution that has =OH−×5.710−5M. Round your answer to 2 decimal places.Note: Reference the Fundamental constants table for additional information.
Solution
To calculate the pH of a solution, we first need to find the pOH, and then use that to find the pH. Here are the steps:
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Calculate the pOH: The pOH is the negative logarithm (base 10) of the hydroxide ion concentration. So, pOH = -log[OH-]. Substituting the given concentration:
pOH = -log(5.7*10^-5) = 4.24 (rounded to 2 decimal places)
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Calculate the pH: The pH and pOH of a solution at 25 degrees Celsius are related by the equation: pH + pOH = 14. So, to find the pH, we subtract the pOH from 14:
pH = 14 - pOH = 14 - 4.24 = 9.76 (rounded to 2 decimal places)
So, the pH of the solution is 9.76.
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