Definitions

from Wiktionary, Creative Commons Attribution/Share-Alike License.

  • abbreviation chemistry The negative of the base 10 logarithm of the concentration of hydroxide ions, measured in moles per liter.

Etymologies

from Wiktionary, Creative Commons Attribution/Share-Alike License

From p, denoting negative logarithm, and OH, denoting the hydroxyl radical.

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Examples

  • What is the pOH of a solution of 0.125 M sodium hydroxide?

    Recently Uploaded Slideshows atalossofnamesk 2010

  • Slide 9: Examples Find [H+], [OH -], and pOH if pH = 8.32 

    Recently Uploaded Slideshows 2009

  • Slide 8: Examples Find [H+], pH, and pOH if [OH -] = 3.4 x 10-6 M 

    Recently Uploaded Slideshows 2009

  • Slide 7: Derivations of pH Also, [H+] [OH -] = 1 x 10-14  This is called the dissociation of water constant or  the ion-product constant of water (Kw) and relates the concentration of H+ and OH - for any solution Given these derivations, we can calculate the  pH, pOH, [H+], and [OH -] for any solution given one of the above!

    Recently Uploaded Slideshows 2009

  • Determine the pH and the pOH when 25. 0ml of 0.12 M HCl titrates 30.0 ml of 0.12 M NaOH?

    Yahoo! Answers: Latest Questions 2009

  • .000101/50ml = .000101/.05L =. 00202M pOH = - log [OH -] = - log [.00202]

    Yahoo! Answers: Latest Questions 2010

  •  pH + pOH = 14 (this holds true for any solution)

    Recently Uploaded Slideshows 2009

  • [OH -] Therefore, [H+] = 1 x 10-7 = [OH -]  We can define pOH as a measure of the  basicity of a solution pOH = - log [OH -] and [OH -] = 10-OH  For pure water, since [H+] = [OH -] = 1x 10-7,

    Recently Uploaded Slideshows 2009

  • pOH = - log [OH -] = 1,004 pH+pOH = 14 pH = 14-pOH = 12,996

    Yahoo! Answers: Latest Questions 2010

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