1. pH ACIDS, BASES and SALTS Acids Bases - “Call Me Maybe” pH and pOH:
Crash Course Chemistry #30
pH Balance
0:00-01:39
Acids Bases - “Call Me Maybe”

2. ACIDS, BASES and SALTS H3O+(aq) + OH- (aq) Self ionization of Water
H2O(l) H2O(l) 
H3O+(aq) OH- (aq)

3. Ion Product constant [H3O+] * [OH-] = 1.0 x 10-14 M [H3O+] = [OH-]
Kw =
[H3O+] * [OH-] = 1.0 x M
[H3O+] = [OH-]
[H3O+] = 1.0 x 10-2 M
[OH-] =
[H3O+] =
[OH-] = 1.0 x 10-6 M

4. The pH scale - relates [H3O+] of substance because [H3O+] are such small numbers.
pH and pOH: Crash Course Chemistry #30
01:45 - 6: :30
(log of a number is the power that number must be raised to get that number/value)
pH = - log [H3O+]

5. pH = - log [H3O+] pH < 7 [H3O+] 1 x 10-7 M pH = 7 [H3O+] 1 x 10-7 M

6. pH = - log [H3O+] pH < 7 [H3O+] greater than 1 x 10-7 M

7. pH = - log [H3O+] pH < 7 [H3O+] greater than 1 x 10-7 M
pH = 7 [H3O+] equal to x M
pH > 7 [H3O+]

8. pH = - log [H3O+] pH < 7 [H3O+] greater than 1 x 10-7 M
pH = 7 [H3O+] equal to x M
pH > 7 [H3O+] less than x M

9. pH = - log [H3O+] pH = - log (1.0 x 10-2 M) =

10. pH = - log [H3O+] pH = - log (1.0 x 10-2 M) =
- [ (log (1) + log (10-2)]
- [0 + -2]

11. pH = - log [H3O+] pH = - log (1.0 x 10-8 M) =
- [ (log (1) + log (10-8)]
- [0 + -8]

12. Do Practice Problems on overhead/board.