1. Which of the following is most likely to behave as a weak acid?

A. HI B. HNO₃ C. HCl D. H₂SO₄ E. none of these

2. Which of the following combinations is correct?

A. NaOH/weak base

B. H₃PO₄ / strong acid

C. HBr /weak acid

D. NH₃ /strong base

E. none of the above

3. The substance, HC₂H₃O₂ , in water is a

A. strong electrolyte

B. weak electrolyte

C. nonelectrolyte

D. strong acid

E. strong base

4. A difference between a strong electrolyte and a nonelectrolyte is:

A. Strong electrolytes conduct electricity, but nonelectrolytes do not.

B. Strong electrolytes dissociate, but nonelectrolytes do not.

C. Strong electrolytes dissolve, but nonelectrolytes do not.

D. A and B are true.

E. A, B, and C are true.

5. Which of the following should be soluble in water?

A. LiCl B. KCl C. AgCl D. A and B E. A, B, and C

6. A simple solution is composed of two parts, the part of greater amount is called the

A. electrolyte B. solvent C. solute D. titrant E. molarity

7. What is the molarity of 10.9 g of KCl dissolved in 150.0 mL of solution ?

A. 0.0727 M

B. 0.146 M

C. 0.975 M

D. 0.0219 M

E. 0.667 M

8. If 25.0 mL of 18.0 M KOH (aq) is diluted to 1.50 L with water, what is the molarity of

KOH (aq) in the new solution?

A. 1.08 M

B. 2.08 M

C. 0.480 M

D. 0.250 M

E. 0.300 M

9. Which of the following groups contains only strong electrolytes?

A. NaF, HCl, NH₃

B. K₂O, LiOH, HF

C. HCN, K₂S, HBr

D. HBr, KBr, NaF

E. HCl, KCl, HNO₂

10. How many grams of NaOH are in 500. mL of 0.800 M NaOH ?

A. 16.0 g

B. 80.0 g

C. 20.0 g

D. 64.0 g

E. 50.0 g

11. How many moles of potassium ions are in 3.50 L of 0.200 M K₃PO₄ (aq)?

A. 0.700 moles

B. 0.233 moles

C. 2.10 moles

D. 0.171 moles

E. 5.83 moles

12. For the reaction between an aqueous solution of magnesium hydroxide and an aqueous

solution of perchloric acid, the species called "spectator ions" are:

A. Mg²⁺, OH^-

B. H⁺ , OH^-

C. H⁺ , ClO₄^-

D. Mg²⁺, ClO₄^-

E. none of the above

13. The Net Ionic Equation for mixing solutions of Pb(NO₃)₂ (aq) and KBr (aq) is:

A. K⁺ (aq) + Br^- (aq) ----> KBr (s)

B. Pb²⁺ (aq) + 2NO₃^- (aq) ----> Pb(NO₃)₂ (s)

C. Pb²⁺ (aq) + 2Br^- (aq) ----> PbBr₂ (s)

D. Pb²⁺ (aq) + 2KBr (aq) ----> 2K⁺ (aq) + PbBr₂ (s)

E. There is no net reaction between these substances!

14. Which of the following solutions will most likely cause a precipitate to be formed when

added to a solution of Mg(NO₃)₂ (aq)?

A. a solution of AgNO₃ (aq)

B. a solution of K₂SO₄ (aq)

C. a solution of FeCl₃ (aq)

D. a solution of Na₂CO₃ (aq)

E. a solution of Ca(ClO₄)₂ (aq)

15. The Net Ionic Equation for the reaction between HCl (aq) and KOH (aq) is:

A. H⁺ (aq) + OH^- (aq) ----> H₂O (l)

B. HCl (aq) + OH^- (aq) ----> H₂O (l)

C. HCl (aq) + OH^- (aq) ----> Cl^- (aq) + H₂O (l)

D. HCl (aq) + KOH (aq) ----> KCl (aq) + H₂O (l)

E. none of these

16. In a neutralization titration, what is an appropriate titrant if the substance you are analyzing

is a vinegar solution containing acetic acid?

A. HCl (aq)

B. NaCl (aq)

C. KBr (aq)

D. KOH (aq)

E. any of these could be used

17 All of the following compounds are insoluble in water except:

A. CuS B. Hg₂Cl₂ C. (NH₄)₂S D. Zn(OH)₂ E. BaSO₄

18. When the equation

___ Na (s) + ___HCl (aq) ----> ___NaCl (aq) + ____ H₂ (g)

is properly balanced, the sum of the coefficients is

A. 7 B. 4 C. 2 D. 10 E. 9

19. What is the sum of the coefficients in the balanced equation for the combustion of C₂H₆

with oxygen gas?

___C₂H₆ (g) + ____ O₂ (g) ------> ___________ + ___________

A. 5 B. 10 C. 19 D. 21 E. 25

20. When the following equation is balanced:

____ HCl + ____Fe₂(CO₃)₃ -----> ____FeCl₃ + ____CO₂ + ____H₂O

then the coefficient for H₂O will be

A. 1 B. 2 C. 3 D. 6 E. 12

21. Iron metal reacts with chorine gas as follows:

2 Fe(s) + 3 Cl₂ (g) ------> 2 FeCl₃ (s)

How many moles of FeCl₃ are produced when 4.6 moles of Cl₂ reacts with excess Fe?

A. 3.1 moles

B. 4.6 moles

C. 1.5 moles

D. 2.3 moles

E. 6.9 moles

22. Given the following reaction:

Na₂SO₄ (s) + 2 C (s) ------>Na₂S (s) + 2 CO₂ (g)

molar mass: 142.1 12.0 78.1     44.0

How many grams of carbon must react with excess Na₂SO₄ to produce 18.4 g of Na₂S ?

A. 11.3 grams

B. 5.65 grams

C. 2.83 grams

D. 239 grams

E. 120 grams

23. Given following reaction :

Mg(OH)₂ (aq) + 2 HCl (aq) ----> MgCl₂ (aq) + 2 H₂O (l)

What volume of 0.38 M HCl (aq) is required to completely neutralize 15 mL of

0.19 M Mg(OH)₂ (aq)?

A. 38 mL

B. 30 mL

C. 19 mL

D. 15 mL

E. 7.5 mL

Molar Masses:  133.3 194.2   402.0  74.5

A. 0.167 mole

B. 0.200 mole

C. 0.333 mole

D. 0.500 mole

E. 0.600 mole

A. 98.3%

B. 39.3%

C. 82.9%

D. 68.5%

E. 78.6%

26. The point in a neutralization titration where moles of base added equals the moles of acid

initially present is called:

A. the eutectic point

B. the electrolyte balance

C. the equivalence point

D. the titration maximum

E. the point of no return

27. When 70.0 mL of 3.00 M Na₂SO₄ is added to 30.0 mL of 1.00 M NaCl, the resulting concentration of Na⁺ is:

A. 2.00 M

B. 2.40 M

C. 4.00 M

D. 4.50 M

E. 7.00 M