1. Acid and Base Review Game
Chemistry

2. Name the Acid HNO2 H2SO4 HCl HBr HClO Nitrous Acid Sulfuric Acid
Hydrochloric Acid
HBr
Hydrobromic Acid
HClO
Hypochlorous Acid

3. NaOH Ca(OH)2 Mg(OH)2 KOH Name the Base Sodium Hydroxide
Calcium Hydroxide
Mg(OH)2
Magnesium Hydroxide
KOH
Potassium Hydroxide

4. Nitric Acid Hydroiodidic Acid Phosphoric Acid Acetic Acid
Write the Formula
Nitric Acid
HNO3
Hydroiodidic Acid HI
Phosphoric Acid
H3PO4
Acetic Acid
HC2H3O2

5. Sodium carbonate Barium hydroxide Lithium hydroxide Write the Formula
Na2CO3
Barium hydroxide
Ba(OH)2
Lithium hydroxide
LiOH

6. What is the definition of an acid? What is the definition of a base?
Arrhenius
What is the definition of an acid?
A substance which produces H+ when put in water
What is the definition of a base?
A substance which produces OH- when put in water

7. If a soap has a hydrogen ion concentration of 2
If a soap has a hydrogen ion concentration of 2.0 x 10-6 M, what is the pH of the solution? The pOH? Is it an acid or a base?
[H+] = 2 x 10-6M pH = -log(2 x 10-6) = 5.7
pOH = 14 – 5.7 = 8.3
Acid because pH < 7

8. What is the hydrogen ion concentration and hydroxide ion concentration of a solution with a pH of 2.3? Is the substance an acid or base?
[H+] = = M
pOH = 14 – 2.3 = 11.7
[OH-] = = 2 x M
Acid because pH < 7

9. What is the hydrogen ion concentration of a sample of phosphoric acid that has a pH of 4.9? What is the concentration of phosphoric acid?
[H+] = = 1.3 x 10-5M
Since there are 3 H’s in each H3PO4 … the concentration of phosphoric acid would be a third of the concentration of H+
1.3 x 10-5/3 = 4.2 x 10-6 M

10. Neutralization Reaction
What is the neutralization reaction for nitrous acid reacting with potassium hydroxide?
HNO2 + KOH  KNO2 + H2O

11. Neutralization Reaction
Write the complete balanced equation for the neutralization of phosphoric acid with calcium hydroxide
2H3PO4 + 3Ca(OH)2  Ca3(PO4)2 + 6H2O

12. How many grams of copper (II) sulfate pentahydrate will be needed to make 75 mL of a M solution?
CM = n/V
.25 = n/0.075
n = mol x = 4.7 g

13. How many kilograms of sucrose C12H22O11 will be needed to make 3
How many kilograms of sucrose C12H22O11 will be needed to make 3.50 L of a 1.15 M solution?
CM = n/v
1.15 = n/3.5
n = mol x 342 = g / 1000 = 1.38 kg

14. What is the pH of a solution made with 0
What is the pH of a solution made with 0.15 grams of barium hydroxide in 4500 mL of water?

15. What is the molar concentration of a solution that contains 0
What is the molar concentration of a solution that contains moles of NaHCO3 in a volume of 115 mL
CM = n/v
CM = 0.075/.115 = 0.65 M

16. A solution has 3. 00 moles of solute in 2
A solution has 3.00 moles of solute in 2.00 L of solution, what is its molar concentration? How many moles would there be in 350 mL of solution?
CM = n/V
CM = 3/2 = 1.5M
1.5 = n/0.35
n = 0.53 mol

17. Describe in your own words how you would prepare 1. 00L of a 0
Describe in your own words how you would prepare 1.00L of a 0.85 M solution of formic acid HCO2H?
CM = n/v
0.85 = n/1
n = 0.85 mol x 46 = 39.1 g
Take 39.1 grams of formic acid and dissolve in a little bit of water. Put into a 1.00 L volumetric flask and fill to the line with water

18. What is the molarity of a sulfuric acid solution which contains 5
What is the molarity of a sulfuric acid solution which contains 5.4 grams of sulfuric acid in 250 mL of water? What is the normality?
5.4g/98 = mol
CM = 0.055/0.25 = 0.22 M
N = (eq)M = 2 x 0.22 = 0.44 N

19. What is the molarity of a potassium hydroxide solution which contains 0.94 moles of potassium hydroxide in 450 mL of water? What is the normality?
CM = 0.94/0.45 = 2.1 M
N = (eq)M = 1 x 2.1 = 2.1 N

20. In the titration of 35 mL of liquid drain cleaner containing NaOH, 50 mL of 0.4M HCl must be added to reach the equivalence point. What is the molarity of the base in the cleaner?
NaVa = NbVb
(0.4)(50) = Nb(35)
Nb = 0.57 N / 1 = 0.57 M

21. Calculate how many milliliters of 0
Calculate how many milliliters of 0.25 M Ba(OH)2 must be added to titrate 46 mL of 0.40 M HClO4
NaVa = NbVb
0.4(46) = 0.5Vb
Vb = 36.8 mL

22. A 15.5 mL sample of M KOH was titrated with an acetic acid solution, It took 21.2 mL of the acid to reach the equivalence point. What is the molarity of the acetic acid?
(0.215)(15.5) = Na(21.2)
Na = N / 1 = M

23. What is the molarity of a solution of phosphoric acid with a pH of 2
= M / 3 = 7.62 x 10-4 M

24. A 20 mL sample of an HCl solution was titrated with 27
A 20 mL sample of an HCl solution was titrated with 27.4 mL of a standard solution of Ba(OH)2. The concentration of the standard is M. What is the molarity of the HCl?
(0.0308)(27.4) = Na(20)
Na = 0.042N / 1 = 0.042M

25. Buffer
What is a buffer?
A solution that resists changes in pH

26. What are buffers made of? Where can you find them?
Weak acid and its conjugate base
Weak base and its conjugate acid
You can find them in your BLOOD

27. I want to dilute 20 mL of a 6M solution of acetic acid to a 3
I want to dilute 20 mL of a 6M solution of acetic acid to a 3.8M solution of acetic acid. How much water should I add to the 6M acetic acid to achieve this?
6(20) = 3.8V
V = 31.6 mL
ADD 11.6 mL of water

28. I mix 20 mL of 4. 5M NaCl with 40 mL of water
I mix 20 mL of 4.5M NaCl with 40 mL of water. What is the new concentration of the NaCl?
4.5(20) = M(60)
M = 1.5 M

29. A 450 mL solution of 1. 5 M HCl is sat out over night
A 450 mL solution of 1.5 M HCl is sat out over night mL of the water evaporated. What is the new concentration of the HCl?
1.5 (450) = M (300)
2.25 M

30. What does the term “strong acid” mean?
Strong acid means that the acid dissociates completely in water

31. I used 50 grams of potassium chromate to make a 1. 4M solution
I used 50 grams of potassium chromate to make a 1.4M solution. What is the volume of the solution?
50 g K2CrO4 / 194 = 0.26 mol
1.4 = .26/v
V = L

32. What is the pH of a solution made by putting 6
What is the pH of a solution made by putting 6.0 grams of phosphoric acid in 250 L of water?
6 g H3PO4 / 98 = mol
[H3PO4] = / 250 = 2.45 x 10-4
[H+] = 3(2.45 x 10-4) = 7.35 x 10-4
pH = -log(7.35 x 10-4) = 3.13

33. What is the pH of a solution made by putting 3
What is the pH of a solution made by putting 3.25 grams of strontium hydroxide in 5000 L of water?
3.25 g Sr(OH)2 / = mol
[Sr(OH)2] = / 5000 = 5.34 x 10-6M
[OH-] = 2(5.34 x 10-6) = 1.07 x 10-5 M
pOH = -log(1.07 x 10-5) = 4.97
pH = 14 – 4.97 = 9.03