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

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Answer 1 · 2017-07-21T17:30:45

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

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

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

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

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

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