November 05, 2024, 11:10:39 AM
Forum Rules: Read This Before Posting


Topic: calculate Ka  (Read 2615 times)

0 Members and 1 Guest are viewing this topic.

Offline donshishi

  • Very New Member
  • *
  • Posts: 2
  • Mole Snacks: +0/-0
calculate Ka
« on: December 16, 2008, 03:23:46 PM »
If [H+] and [acid] are known
The equation should be [H+][acid-]/[acid]= Ka   right?   
But what I don't get is, if only [H+] and [acid] are known and [acid-] is not, how can you then calculate the value of Ka?   


Online Borek

  • Mr. pH
  • Administrator
  • Deity Member
  • *
  • Posts: 27837
  • Mole Snacks: +1811/-412
  • Gender: Male
  • I am known to be occasionally wrong.
    • Chembuddy
Re: calculate Ka
« Reply #1 on: December 16, 2008, 05:09:53 PM »
Take a look at stoichiometry of dissociation.

Alternatively, think about charge balance.
ChemBuddy chemical calculators - stoichiometry, pH, concentration, buffer preparation, titrations.info

Sponsored Links