Part two of acid/base pH calculations

1

• Part two of acid/base pH calculations
• Student will
• if given pH calculate the
• hydronium ion concentration hydroxide ion
  concentration
• molarity of a solution
• Ws. 19.2

2

• If pH is 7.40 what is the hydronium or the
  molarity?
• If given pHfind antilog
• negative hydronium conc.
• -7.40 enter 3.9810717 E -8
• secret.hydronium concentration is the molarity
  for an acid
• BUT if they also ask for hydroxide
  concentration one must use the equilibrium
  constant for water
• Equilibrium Constant for water is
• Kw 1 x 10-14
• Kw H OH-

Yellow 2nd
log
3

• The pH of an orange is 4.0pH. What are the H30
  and OH in this fruit? What is its Molarity?

4

• 2. Lemons have a pH 3.15. What are the
  hydronium and the hydroxide concentrations?
  What is its molarity?

5

1. What is the molarity if the pH is 12.9 for a
   Calcium hydroxide solution?

6

• 4. Given pH 5.5 for an acid solution. What is
  the molarity?

7

• 5. Given pH 8.8 for a base solution what is the
  molarity?

8

• 6. Given pH 6.7, what is the molarity? What are
  the hydronium and the hydroxide ?

9

• If the H3O for butter is 6.0 x 10-7
• is it acidic, basic, or neutral?

10

• 8. If given the OH as 3.16 x 10-11, what is
  the hydronium concentration? What is the pH?

11

• 9. If given the H3O as 1.6 x 10-6, what is
  the hydroxide concentration? What is the pH?

12

• Remember 3 formulas pH-logH3O
• pOH-logOH
• pH pOH 14
• Remember H3O is hydronium concentration
• or..molarity for an Acid
• or..H proton concentration
• Remember OH is hydroxide concentration
• or molarity for a base
• Remember if given pH use antilog to calculate
  H3O OH
• put pH in as negative number
• Remember Kw 1x10-14
• Kw H3O OH

13
If the pH5.2 what is the OH?

1. 6.31 x 10-6
2. 1.58x 10-9
3. .716003344
4. 8.8 x 10 -7

14

• Part two of acid/base pH calculations
• Student will
• if given pH calculate the
• hydronium ion concentration hydroxide ion
  concentration
• molarity of a solution
• Ws. 19.2