1 / 10

pH Calculations

pH Calculations. pH Equations You must know how to use the following equations, which are all based on the ionization of water at 25 0 C ! Kw =[H + ][ OH - ] = 1.00 x 10 -14 pH = -log[H + ] pOH = -log[OH - ] [H + ] = 10 -pH [OH - ] = 10 -pOH pH + pOH = 14.0.

thi
Télécharger la présentation

pH Calculations

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. pH Calculations

  2. pH Equations You must know how to use the following equations, which are all based on the ionization of water at 250 C! Kw =[H+][ OH-] = 1.00 x 10-14 pH= -log[H+] pOH= -log[OH-] [H+]= 10-pH [OH-]= 10-pOH pH + pOH = 14.0

  3. pH Calculations [H+] [OH-] pH pOH 2.5 x 10-4 M Calculation

  4. pH Calculations [H+] [OH-] pH pOH 2.5 x 10-4 M 4.0 x 10-11 M 3.60 10.40 9.435 Calculation

  5. pH Calculations [H+] [OH-] pH pOH 2.5 x 10-4 M 4.0 x 10-11 M 3.60 10.40 3.67 x 10-10 M2.72 x 10-5 M9.435 4.565 2.6 x 10-4 M Calculation

  6. pH Calculations [H+] [OH-] pH pOH 2.5 x 10-4 M 4.0 x 10-11 M 3.60 10.40 3.67 x 10-10 M2.72 x 10-5 M9.435 4.565 3.8 x 10-11 M 2.6 x 10-4 M10.413.59 8.40

  7. pH Calculations [H+] [OH-] pH pOH 2.5 x 10-4 M 4.0 x 10-11 M 3.60 10.40 acid 3.67 x 10-10 M2.72 x 10-5 M9.435 4.565basic 3.8 x 10-11 M 2.6 x 10-4 M10.413.59 basic 2.5 x 10-6 M4.0 x 10-9 M5.608.40 acid If the pH is lower than 7, the solution is acidic! If the pH is greater than 7, the solution is basic!

  8. 1. Calculate the pH of 0.40 M HI. HI H+ + I- 0.40 M 0.40 M 0.40 M

  9. 2. Calculate the pH of 0.030 M Ba(OH)2. Ba(OH)2 Ba2+ + 2OH- 0.030 M 0.030 M 0.060 M

  10. 3. Calculate the pH of 100.0 mL of 1.0 M HCl after 300.0 mL of water is added to it. HCl H+ + Cl-

More Related