Name: Acids and Bases Worksheet #1

(Characteristics, Conjugates, Kw Strong Acids and Bases) 1. Acids donate hydrogen ions in water. True or false

2. Bases produce hydroxide ions in water. True or false

3. Acids donate a H+ in water. True or false

4. Bases accept a H+ in water. True or false

5. List 5 characteristics of an acid and 5 characteristics of a base:

6. A substance that does not turn litmus paper blue and remains colorless in the presence of phenolphthalein would be ______. What is the pH range for acids?______for bases?______

7. Determine which of the following are strong acids, weak acids, strong bases, and weak bases. a. H2SO3______b. HNO3______c. HBr______d. HOI______e. H3AsO4______f. NaOH______

8. Determine the acid, base, conjugate acid, and conjugate base in each: + - a. CH3COOH(aq) + H2O(l)  H3O (aq) + CH3COO (aq)

- - b. HCO3 (aq) + H2O(l)  H2CO3(aq) + OH (aq)

2- - - c. HNO3 + SO4  HSO4 + NO3

Kw and Strong Acid and Base Calculations: SHOW ALL WORK FOR CREDIT!!

______13. If [H+] = 1.2X10-3M calculate [OH-].

- -2 + ______14. [OH ] = 3.5X10 M. Use Kw to determine [H ].

+ - -4 ______15. Use Kw to determine [H ] if [OH ] = 2.0X10 M Ca(OH)2.

- + -4 ______16. Use Kw to determine the [OH ] if [H ] = 6.0X10 M H2SO4. Acids and Bases Worksheet #2 (pH Strong Acids and Bases, % Ionization Weak Acids and Bases) pH and Strong Acid and Base Calculations: SHOW ALL WORK FOR CREDIT!!

______17. What is the pH if the [H+] = 0.80M?

______18. If the pH of a strong acid solution is known to be 3.25, what is the [H+]? ______(b) what is the pOH of this solution?

______19. If the pOH of a sodium hydroxide solution is known to be 1.50, what is the [OH-]?

______20. What is the pOH if the [OH-] = 0.165 M? ______(b) What is the pH of this basic solution?

______21. If the pOH of a cesium hydroxide solution is known to be 4.00, what is the [OH-]?

______22. If the pH of a hydroiodic acid solution is known to be 3.21, what is the [H+]?

______23. What is the pH if the [OH-] = 0.45 M? ______(b) what is the pOH of this solution?

24. Calculate the percent ionization for a 1.0M weak acid solution if the concentration of ions is 0.025M .

25. Calculate the percent ionization for a 1.0M weak base solution if the concentration of ions is 0.050M . Name: Acids and Bases Worksheet #3 (Titrations)

1. Suppose you know 0.020L of a 0.0050M NaOH solution is required to reach the equivalence point in the titration of 0.010L of an unknown molarity of HCl. What is the molarity of the HCl? Reaction: NaOH + HCl → NaCl + H2O

Acid Base M= M= mol= mol= V (in L)= V (in L)=

2. In a titration, 0.0274L of a 0.0154M Ba(OH)2 solution is added to a 0.0200L solution of HCl with an unknown concentration. What is the molarity of the HCl solution? Reaction: Ba(OH)2 + 2HCl → BaCl2 + 2H2O

Acid Base M= M= mol= mol= V (in L)= V (in L)=

3. A 0.0155L sample of a 0.215M KOH solution was neutralized by0.0 212L of aqueous sulfuric acid in a titration. Calculate the M of the sulfuric acid solution. Reaction: 2KOH + H2SO4 → K2SO4 + 2H2O

Acid Base M= M= mol= mol= V (in L)= V (in L)= Acids and Bases Test Review Be sure to read the notes and complete all worksheets! 1. List 5 properties of acids and 5 properties of bases.

2. Define the following in terms of pH, pOH, [H+], and [OH-]: a. neutral solution b. acidic solution c. basic solution

3. Determine the acid, base, conjugate acid, and conjugate base in each: + - a. CH3COOH(aq) + H2O(l)  H3O (aq) + CH3COO (aq)

Calculating the pH of Strong Acids and Bases 10. What is the pH of a solution if the [H+]=0.75 M?

11. What is the pOH of a solution if the [OH-]=3.75 M?

12. Find the pOH of a strong base that has an [OH-] of 1.0 x 10-9 M.

13. What is the [H+] if the pH is 12.05?

14. A solution has a pH of 8.5. What is the [H+]? What is the [OH-]?

Titrations 15. What is the molarity of NaOH if 0.0450L of it are neutralized by 0.0250L of a 1.5 M solution of sulfuric acid? Reaction: 2NaOH + H2SO4 → Na2SO4 + 2H2O Acid Base M= M= mol= mol= V (in L)= V (in L)=

16. What volume of 0.65 M HCl must be added to 0.0350L of l.00 M KOH to neutralize the solution? Reaction: KOH + HCl → KCl + H2O Acid Base M= M= mol= mol= V (in L)= V (in L)=

+ - Calculating the [H ] and [OH ] using Kw 22. If [OH-]=4.5X10-2M calculate [H+].

23. If [H+]=2.0X10-4M calculate [OH-].

Calculating % Ionization of weak acids and bases 24. Calculate the percent ionization for a 1.0M weak acid solution if the concentration of ions is 0.025M .

25. Calculate the percent ionization for a 1.0M weak base solution if the concentration of ions is 0.050M .