AP Chemistry Chapter 4 Assessment

17) The net ionic equation contains which of the following terms? A.) Ag⁺ (aq) B.) Ba⁺² (aq) C.) NO₃⁻ (aq) D.) H⁺ (aq) E.) AgCl (aq)

A.) Ag⁺ (aq)

8) You have exposed electrodes of a light bulb in a solution H₂SO₄ such that the light bulb is on. You add a dilute solution in the bulb grows dim. Which of the following could be in the solution? A.) Ba(OH)₂ B.) NaNO₃ C.) K₂SO₄ D.) Cu(NO₃)₂ E.) none of these

A.) Ba(OH)₂

21) When solutions of cobalt(II) chloride and carbonic acid react, which of the following terms will be present in the net ionic equation? A.) CoCO₃ (s) B.) H⁺ (aq) C.) 2CoCO₃ (s) D.) 2Cl⁻ (aq) E.) two of these

A.) CoCO₃ (s)

33) Select the spectator ions for the following reaction, Pb(NO₃)₂ + 2KCl → PbCl₂ +2NaNO₃ A.) K⁺ (aq), NO₃⁻ (aq) B.) Pb⁺² (aq), NO₃⁻ (aq) C.) K⁺ (aq), Cl⁻ (aq) D.) Pb⁺² (aq), Cl⁻ (aq), K⁺ (aq), NO₃⁻ (aq) E.) Pb⁺² (aq), Cl⁻ (aq)

A.) K⁺ (aq), NO₃⁻ (aq)

34) Select the spectator ions for the following reaction in aqueous solution, AgNO₃ + LiI → AgI + LiNO₃ A.) Li⁺ (aq), NO₃⁻ (aq) B.) Ag⁺ (aq), NO₃⁻ (aq) C.) Li⁺ (aq), I⁻ (aq) D.) Ag⁺ (aq), I⁻ (aq), Li⁺ (aq), NO₃⁻ (aq) E.) Ag⁺ (aq), I⁻ (aq)

A.) Li⁺ (aq), NO₃⁻ (aq)

28) You have separate solutions of HCl and H₂SO₄ with the same concentrations in terms of molarity. You wish to neutralize a solution of NaOH. Which acid solution would require more volume (in mL) to neutralize the base? A.) The HCl solution. B.) The H₂SO₄ solution. C.) You need to know the acid concentrations to answer this question. D.) You need to know the volume and concentration of the NaOH solution to answer this question. E.) C and D

A.) The HCl solution.

24) When solutions of carbonic acid and potassium hydroxide react, which of the following are NOT present in the complete ionic equation? A.) hydrogen ion B.) carbonate ion C.) potassium ion D.) hydroxide ion E.) water

A.) hydrogen ion

15) Aqueous solutions of barium chloride and silver nitrate are mixed to form solid silver chloride and aqueous barium nitrate. The balanced molecular equation contains which one of the following terms? A.) AgCl (s) B.) 2AgCl (s) C.) 2Ba(NO₃)₂ (aq) D.) BaNO₃ (aq) E.) 3AgCl (aq)

B.) 2AgCl (s)

6) Which of the following aqueous solutions contains the greatest number of ions? A.) 400.0 mL of 0.10M NaCl B.) 300.0 mL of 0.10M CaCl₂ C.) 200.0 mL of 0.10M FeCl₃ D.) 200.0 mL of 0.10M KBr E.) 800.0mL of 0.10M sucrose

B.) 300.0 mL of 0.10M CaCl₂

20) When solutions of phosphoric acid and iron(III) nitrate react, which of the following terms will be present in the balanced molecular equation? A.) HNO₃ (aq) B.) 3HNO₃ (aq) C.) 2FePO₄ (s) D.) 3FePO₄ (s) E.) 2HNO₃ (aq)

B.) 3HNO₃ (aq)

36) Identify the precipitate(s) formed (if any) in the following reaction in aqueous solution, Fe(NO₃)₂ + (NH₄)₂CO₃ → A.) Fe₂(CO₃)₃ B.) FeCO₃ (s) C.) (NH₄)₂CO₃ (s) D.)NH₄NO₃ (s) E.) No precipitate will be observed

B.) FeCO₃ (s)

2) All of the following are weak acids except A.) HCNO B.) HBr C.) HF D.) HNO₂ E.) HCN

B.) HBr

4) Which of the following is paired incorrectly? A.) H₂SO₄ -> strong acid B.) HNO₃ -> weak acid C.) Ba(OH)₂ -> strong base D.) HCl -> strong acid E.) NH₃ -> weak base

B.) HNO₃ -> weak acid

5) A solid acid HX is mixed with water. Two possible solutions can be obtained. Which of the following is true? A.) In case I, HX is acting as a weak acid, and in case II, HX is acting like a strong acid. B.) In case I, HX is acting like a strong acid, and in case II, HX is acting like a weak acid. C.) In both cases, HX is acting like a strong acid. D.) In both cases, HX is acting like a weak acid. E.) HX is not soluble in water.

B.) In case I, HX is acting like a strong acid, and in case II, HX is acting like a weak acid.

13) Which of the following compounds is soluble in water? A.) Ni(OH)₂ B.) K₃PO₄ C.) BaSO₄ D.) CoCO₃ E.) PbCl₂

B.) K₃PO₄

35) Complete the following reaction in aqueous solution and select the spectator ions, Fe(NO₃)₂ + (NH₄)₂CO₃ → A.) Fe⁺² (aq), NO₃⁻ (aq) B.) NH₄⁺ (aq), NO₃⁻ (aq) C.) NH₄⁺ (aq), CO₃⁻² (aq) D.) Fe⁺² (aq), NH₄⁺ (aq), NO₃⁻ (aq), CO₃⁻² (aq) E.) Fe⁺² (aq), CO₃⁻² (aq)

B.) NH₄⁺ (aq), NO₃⁻ (aq)

29) In which of the following does nitrogen have an oxidation state of ⁺⁴? A.) HNO₃ B.) NO₂ C.) N₂O D.) NH₄Cl E.) NaNO₂

B.) NO₂

16) The balanced complete ionic equation contains which of the following terms? A.) 2Ba⁺²(aq) B.) Cl⁻(aq) C.) 2Ag⁺(aq) D.) NO3⁻ (aq) E.) AgCl(aq)

C.) 2Ag⁺ (aq)

7) You have two solutions of sodium chloride. One is a 2.00M solution, the other is a 4.00M solution. You have much more of the 4.00M solution and you add the solutions together. Which of the following could be the concentration of the final solution? A.) 2.70M B.) 3.00M C.) 3.50M D.) 6.00M E.) 8.10M

C.) 3.50M

22) The net ionic equation for the reaction of aluminum sulfate and sodium hydroxide contains which of the following species? A.) 3Al⁺³ (aq) B.) OH⁻ (aq) C.) 3OH⁻ (aq) D.) 2Al⁺³ (aq) E.) 2Al(OH)₃ (s)

C.) 3OH⁻ (aq)

12) Which of the following ions is most likely to form an insoluble sulfate? A.) K⁺ B.) Li⁺ C.) Ca⁺² D.) S⁻² E.) Cl⁻

C.) Ca⁺²

9) Aqueous solutions of sodium sulfide and copper (II) chloride are mixed together. Which statement is correct? A.) both NaCl and CuS precipitate from solution. B.) no reaction will occur C.) CuS will precipitate from solution. D.) NaCl will precipitate from solution. E.) A gas is released.

C.) CuS will precipitate from solution.

1) Which of the following is a strong acid? A.) HF B.) KOH C.) HClO₄ D.) HClO E.) HBrO

C.) HClO₄

26) When solutions of carbonic acid and potassium hydroxide react, which of the following are NOT present in the net ionic equation? I. hydrogen ion II. carbonate ion III. aluminum ion IV. hydroxide ion A.) I and II B.) I, II, and III C.) I and IV D.) I and III E.) II and III

C.) I and IV

18) In writing the complete ionic equation for the reaction (if any) that occurs when aqueous solutions of KOH and Mg(NO₃)₂ are mixed, which of the following would not be written as ionic species? A.) KOH B.) Mg(NO₃)₂ C.) Mg(OH)₂ D.) KNO₃ E.) All of the above would be written as ionic species.

C.) Mg(OH)₂

3) Which of the following is not a strong base? A.) Ca(OH)₂ B.) KOH C.) NH₃ D.) LiOH E.) Sr(OH)₂

C.) NH₃

38) Which of the following ions forms the fewest insoluble salts? A.) Al⁺³ B.) Cl⁻ C.) NH₄⁺ D.) OH⁻ E.) Mg⁺²

C.) NH₄⁺

37) Which of the following ions forms the fewest insoluble salts? A.) Al⁺³ B.) Cl⁻ C.) NO₃⁻ D.) OH⁻ E.) Mg⁺²

C.) NO₃⁻

39) In which of the following does nitrogen have the lowest oxidation state? A.) HNO₃ B.) NO₂ C.) N₂O D.) NH₄Cl E.) NaNO₂

C.) N₂O

25) When solutions of acetic acid and sodium hydroxide react, which of the following are NOT present in the net ionic equation? I. hydrogen ion II. acetate ion III. sodium ion IV. hydroxide ion A.) I and II B.) I, II, and III C.) I and IV D.) I and III E.) II and III

D.) I and III

23) You mix 275.0 mL of 1.2 M lead(II) nitrate with 300.0 mL of 1.85 M potassium iodide. The lead(II) iodide is insoluble. Which of the following is false? A.) The final concentration of Pb⁺² ions is 0.0913M B.) You form 128g of lead (II) Iodide C.) The final concentration of K⁺ is 0.965M D.) The final concentration of NO₃⁻ is 0.965M E.) All are true.

D.) The final concentration of NO₃⁻ is 0.965M

30) Which of the following statements is true A.) When a metal reacts with a nonmetal, an ionic compound is formed. B.) A metal-nonmetal reaction can always be assumed to be an oxidation-reduction reaction. C.) Two nonmetals can undergo an oxidation-reduction reaction D.) When two nonmetals react, the compound formed is ionic. E.) A metal-nonmetal reaction involves electron transfer.

D.) When two nonmetals react, the compound formed is ionic.

19) The net ionic equation for the reaction of calcium bromide and sodium phosphate contains which of the following species? A.) 2Br⁻ (aq) B.) PO₄⁻³ (aq) C.) 2Ca₃(PO₄)₂ (s) D.) 6NaBr (aq) E.) 3Ca⁺² (aq)

E.) 3Ca⁺² (aq)

32) Which of the following statements is true? Oxidation and reduction A.) cannot occur independently of each other B.) accompany all chemical changes C.) describe the loss and gain of electron(s), respectively D.) result in change in the oxidation states of the species involved E.) A, C, and D

E.) A, C, and D

31) Which of the following reactions does not involve oxidation-reduction? A.) CH₄+3O₂→2H₂O+CO₂ B.) Zn+2HCl→ZnCl₂+H₂ C.) 2Na+2H₂O→2NaOH+H₂ D.)MnO₂+4HCl→Cl₂+2H₂O+MnCl₂ E.) All are oxidation-reduction reactions

E.) All are oxidation-reduction reactions

40) In which of the following does iodine have the lowest oxidation state? A.) LiIO₃ B.) IO₂ C.) I₂O D.) NH₄I E.) I₂

E.) I₂

14) Which pair of ions would not be expected to form a precipitate when dilute solutions of each are mixed? A.) Al⁺³, S⁻² B.) Pb⁺², Cl⁻ C.) Ba⁺², PO4⁻³ D.) Pb⁺², OH⁻ E.) Mg⁺², SO4⁻²

E.) Mg⁺², SO4⁻²

10) Aqueous solutions of potassium sulfate and ammonium nitrate are mixed together. Which statement is correct? A.) Both KNO₃ and NH₄SO₄ precipitate from solution. B.) A gas is released. C.) NH₄SO₄ will precipitate from solution. D.) KNO₃ will precipitate from solution. E.) No reaction will occur.

E.) No reaction will occur.

11) Which of the following salts is insoluble in water? A.) Na₂S B.) K₂CO₃ C.) Pb(NO₃)₂ D.) CaCl₂ E.) All of these are soluble in water.

E.) all of these are soluble in water.

27) When solutions of carbonic acid and copper (II) hydroxide react, which of the following are spectator ions? A.) hydrogen ion B.) carbonate ion C.) copper (II) ion D.) hydroxide ion E.) none of these

E.) none of these