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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.

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pH Calculations

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  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-

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