April 28, 2024, 07:45:54 PM
Forum Rules: Read This Before Posting


Topic: Calc pH and Concentrations  (Read 2866 times)

0 Members and 1 Guest are viewing this topic.

Offline stmoney

  • Regular Member
  • ***
  • Posts: 11
  • Mole Snacks: +0/-0
Calc pH and Concentrations
« on: December 04, 2006, 04:53:27 PM »
The pOH of a solution is 11.34. calculate the pH and concentration of [OH-] and [H+].

I know pOH = 14 - pH, so...
11.34 = 14 - pH --> pH = 2.66

To find the [H+] and [OH-] concentration..

[H+] = 10^-pH, therefore the [H+] concentration is simply 10^-2.66 or .002, correct?

 and is the [OH-] just 11.34?

Offline Borek

  • Mr. pH
  • Administrator
  • Deity Member
  • *
  • Posts: 27665
  • Mole Snacks: +1801/-410
  • Gender: Male
  • I am known to be occasionally wrong.
    • Chembuddy
Re: Calc pH and Concentrations
« Reply #1 on: December 04, 2006, 05:05:09 PM »
[H+] = 10^-pH

OK. But check significant figures in your answer.

Quote
and is the [OH-] just 11.34?

Compare with above.
ChemBuddy chemical calculators - stoichiometry, pH, concentration, buffer preparation, titrations.info

Sponsored Links