PH Scale and Calculations

Page
2

O

H

H

O

H

H

O

Self ionization reaction of water:

+

H

+

+

-

Slide 10

pH and pOH

pH = - log[H3O+] [H3O+] = 10-pH

pOH = - log[OH-] [OH-] = 10-pOH

pKw = pH + pOH = 14.00

neutral solution: [H3O+] = [OH-] = 10 –7 M pH = 7.0

acidic solution: [H3O+] > 10-7 M pH < 7.0

basic solution: [H3O+] < 10-7 M pH > 7.0

Slide 11

Practice

Finish the following for homework

Page 566 #12-15 (using Kw)

Page 569 # 16-19 (using pH = -log[H+]

Page 572 # 20-23

Page 578 # 2, 6-8