If the hydroxide ion concentration is #3.5 × 10^"-5"color(white)(l)"mol/L"#, what are the pH and the hydrogen ion concentration?

1 Answer
Ernest Z.
Jul 21, 2017

#"pH = 9.54; [H"^"+"] = 2.86 × 10^"-10"color(white)(l) "mol/L"#

Explanation:

#["OH"^"-"] = 3.5 × 10^"-5"color(white)(l) "mol/L"#

#"pOH = -log"["OH"^"-"] = "-log"(3.5 × 10^"-5") = 4.46#

#"pH = 14.00 - pOH = 14.00 - 4.46 = 9.54"#

#["H"^"+"] = 10^"-pH"color(white)(l) "mol/L" = 10^"-9.54" color(white)(l)"mol/L" = 2.86 × 10^"-10"color(white)(l) "mol/L"#

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