Successfully reported this slideshow.
We use your LinkedIn profile and activity data to personalize ads and to show you more relevant ads. You can change your ad preferences anytime.
pHCalculations               Soren Sorensen
pHScale
Self-Ionization of Water   H2O + H2O             H3O+ + OH-Though pure water is considered anon-conductor, there is a sli...
Kw – Ionization Constant for Water In pure water at 25 C:    [H3O+] = 1 x 10-7 mol/L    [OH-] = 1 x 10-7 mol/L Kw is a co...
Calculating pH, pOH        pH = -log10(H3O+)       pOH = -log10(OH-)Relationship between pH and pOH        pH + pOH = 14Fi...
pH + pOH = 14
P h calculations
Upcoming SlideShare
Loading in …5
×

P h calculations

710 views

Published on

Published in: Technology, Business
  • Be the first to comment

  • Be the first to like this

P h calculations

  1. 1. pHCalculations Soren Sorensen
  2. 2. pHScale
  3. 3. Self-Ionization of Water H2O + H2O  H3O+ + OH-Though pure water is considered anon-conductor, there is a slight, butmeasurable conductivity due to “self-ionization”
  4. 4. Kw – Ionization Constant for Water In pure water at 25 C: [H3O+] = 1 x 10-7 mol/L [OH-] = 1 x 10-7 mol/L Kw is a constant at 25 C: Kw = [H3O+][OH-] Kw = (1 x 10-7)(1 x 10-7) = 1 x 10-14
  5. 5. Calculating pH, pOH pH = -log10(H3O+) pOH = -log10(OH-)Relationship between pH and pOH pH + pOH = 14Finding [H3O+], [OH-] from pH, pOH [H3O+] = 10-pH [OH-] = 10-pOH
  6. 6. pH + pOH = 14

×