Question 1

What volume of concentrated nitric acid (15.0 M)is required to make 100.mL of a 3.0 M nitric acid solution?

Accepted Answer

The answer of What volume of concentrated nitric acid (15.0...

Question 2

Identify the precipitate(s)formed when solutions of Na3PO4(aq), Ca(NO3)2(aq), and NH4ClO3(aq)are mixed.

Accepted Answer

Question 3

Identify the major ionic species present in an aqueous solution of H2SO4.

Accepted Answer

A) S6+, O36- (plus H2O as a neutral species) 
B) H+, OH-, S6+, 3O2- 
C) 2H+, S6+, 4O2- 
D) H+, HSO4- 
E) 2H+, SO42- 
A) S6+, O36- (plus H2O as a neutral species) 
B) H+, OH-, S6+, 3O2- 
C) 2H+, S6+, 4O2- 
D) H+, HSO4- 
E) 2H+, SO42-

Question 4

What element is oxidized in the following chemical reaction? 
3Cu + 8HNO3 $\rarr$3Cu(NO3)2 + 2NO + 4H2O

Accepted Answer

A) Cu 
B) H 
C) N 
D) O 
E) H2O 
A) Cu 
B) H 
C) N 
D) O 
E) H2O

Question 5

Which of the following will occur when solutions of CuSO4(aq)and BaCl2(aq)are mixed?

Accepted Answer

A) A precipitate of CuCl2 will form; Ba2+ and SO42- are spectator ions. 
B) A precipitate of CuSO4 will form; Ba2+ and Cl- are spectator ions. 
C) A precipitate of BaSO4 will form; Cu2+ and Cl- are spectator ions. 
D) A precipitate of BaCl2 will form; Cu2+ and SO42- are spectator ions. 
E) No precipitate will form. 
A) A precipitate of CuCl2 will form; Ba2+ and SO42- are spectator ions. 
B) A precipitate of CuSO4 will form; Ba2+ and Cl- are spectator ions. 
C) A precipitate of BaSO4 will form; Cu2+ and Cl- are spectator ions. 
D) A precipitate of BaCl2 will form; Cu2+ and SO42- are spectator ions. 
E) No precipitate will form.

Question 6

Identify the oxidizing agent in the following chemical reaction. 
2MnO4- + 5H2SO3 $\rarr$ 2Mn2+ + 5SO42- + 4H+ + 3H2O

Accepted Answer

A) MnO4- 
B) H2SO3 
C) Mn2+ 
D) SO42- 
E) H+ 
A) MnO4- 
B) H2SO3 
C) Mn2+ 
D) SO42- 
E) H+

Question 7

Identify the major ionic species present in an aqueous solution of C6H12O6 (glucose).

Accepted Answer

A) 6 C-, 12 H+, 6 O- 
B) 6 C+, 12 H+, 6 O2- 
C) 6 CH2+, 6 O2- 
D) C6+, 12 H+, 6 O2- 
E) no ions are present 
A) 6 C-, 12 H+, 6 O- 
B) 6 C+, 12 H+, 6 O2- 
C) 6 CH2+, 6 O2- 
D) C6+, 12 H+, 6 O2- 
E) no ions are present

Question 8

Name and give the formulas for six strong acids.

Accepted Answer

hydrochloric acid, HCl; hydrob

Question 9

Which of the following is NOT a redox reaction?

Accepted Answer

A) 2NaN3(s)$\rarr$2Na(s)+ 3N2(g) 
B) Fe2O3(s)+ 2Al(s)$\rarr$ 2Fe(s)+ Al2O3(s) 
C) 3NO2(g)+ H2O(l)$\rarr$2HNO3(aq)+ NO(g) 
D) NH4Cl(aq)+ AgNO3 $\rarr$NH4NO3(aq)+ AgCl(s) 
E) 2ZnS(s)+ 3O2(g)$\rarr$2ZnO(s)+ 2SO2(g) 
A) 2NaN3(s)$\rarr$2Na(s)+ 3N2(g) 
B) Fe2O3(s)+ 2Al(s)$\rarr$ 2Fe(s)+ Al2O3(s) 
C) 3NO2(g)+ H2O(l)$\rarr$2HNO3(aq)+ NO(g) 
D) NH4Cl(aq)+ AgNO3 $\rarr$NH4NO3(aq)+ AgCl(s) 
E) 2ZnS(s)+ 3O2(g)$\rarr$2ZnO(s)+ 2SO2(g)

Question 10

Identify the major ions present in an aqueous LiOH solution.

Accepted Answer

A) Li2+, O-, H- 
B) Li+, OH- 
C) LiO-, H+ 
D) Li+, O2-, H+ 
E) Li-, OH+ 
A) Li2+, O-, H- 
B) Li+, OH- 
C) LiO-, H+ 
D) Li+, O2-, H+ 
E) Li-, OH+

Question 11

Identify the following compound as a strong electrolyte, weak electrolyte, or nonelectrolyte: H2CO3

Accepted Answer

Question 12

Determine the correct oxidation numbers for all three elements in Ca(ClO)2 in the order that the elements are shown in the formula?

Accepted Answer

A) +2, +1, -2 
B) +2, -2, +1 
C) +2, -3, +2 
D) -2, +2, -1 
E) -2, +3, -2 
A) +2, +1, -2 
B) +2, -2, +1 
C) +2, -3, +2 
D) -2, +2, -1 
E) -2, +3, -2

Question 13

What mass of C12H22O11 (sucrose)is needed to prepare 255 mL of a 0.570 M solution of sucrose in water?

Accepted Answer

A) 49.8 g 
B) 145 g 
C) 153 g 
D) 0.145 g 
E) 447 g 
A) 49.8 g 
B) 145 g 
C) 153 g 
D) 0.145 g 
E) 447 g

Question 14

What element is reduced in the following chemical reaction? 
Cu + 2H2SO4 $\rarr$ CuSO4 + SO2 + 2H2O

Accepted Answer

A) Cu 
B) H 
C) S 
D) O 
E) H2O 
A) Cu 
B) H 
C) S 
D) O 
E) H2O

Question 15

Identify the oxidizing agent in the following reaction.
2KBr + F2 $\rarr$Br2 + 2KF

Accepted Answer

Question 16

The following experiments were carried out and observations recorded.
Expt.#1: copper metal was added to an aqueous solution of silver nitrate
Observation: The copper become coated with a substance.
Expt.#2: lead metal was added to an aqueous solution of copper(II)nitrate
Observation: The lead turned black and crumbled.
Expt.#3: zinc metal was added to an aqueous solution of lead(II)nitrate
Observation: The zinc appeared to fall apart.
Rank the metals from most active to least active.

Accepted Answer

most active Zn, next

Question 17

When 50.0 mL of a 0.3000 M AgNO3 solution is added to 50.0 mL of a solution of MgCl2, an AgCl precipitate forms immediately.The precipitate is then filtered from the solution, dried, and weighed.If the recovered AgCl is found to have a mass of 0.1183 g, what as the concentration of magnesium ions in the original MgCl2 solution?

Accepted Answer

A) 0.300 M 
B) 8.25 × 10-3 M 
C) 1.65 × 10-2 M 
D) 2.06 × 10-5 M 
E) 4.13 × 10-3 M 
A) 0.300 M 
B) 8.25 × 10-3 M 
C) 1.65 × 10-2 M 
D) 2.06 × 10-5 M 
E) 4.13 × 10-3 M

Question 18

A 110.mL solution of 0.340 M HCl(aq)is mixed with a solution of 330.mL of 0.150 M HNO3(aq).The solution is then diluted to a final volume of 1.00 L.How many moles of H+ are present in the final solution?

Accepted Answer

A) 0.0869 moles H+ 
B) 0.490 moles H+ 
C) 0.415 moles H+ 
D) 0.374 moles H+ 
E) 0.0435 moles H+ 
A) 0.0869 moles H+ 
B) 0.490 moles H+ 
C) 0.415 moles H+ 
D) 0.374 moles H+ 
E) 0.0435 moles H+

Question 19

The oxidation number of N in NaNO3 is

Accepted Answer

A) +6 
B) +5 
C) +3 
D) -3 
E) None of the above. 
A) +6 
B) +5 
C) +3 
D) -3 
E) None of the above.

Question 20

Which of the following represents an acid-base neutralization reaction?

Accepted Answer

A) 2Al(s)+ 3H2SO4(aq)$\rarr$Al2(SO4)3(aq)+ 3H2(g) 
B) SO2(g)+ H2O(l)$\rarr$H2SO3(g) 
C) LiOH(aq)+ HNO3(aq) $\rarr$LiNO3(aq)+ H2O(l) 
D) 2KBr(aq)+ Cl2(g)$\rarr$2KCl(aq)+ Br2(l) 
E) CaBr2(aq)+ H2SO4(aq)$\rarr$ CaSO4(s)+ 2HBr(g) 
A) 2Al(s)+ 3H2SO4(aq)$\rarr$Al2(SO4)3(aq)+ 3H2(g) 
B) SO2(g)+ H2O(l)$\rarr$H2SO3(g) 
C) LiOH(aq)+ HNO3(aq) $\rarr$LiNO3(aq)+ H2O(l) 
D) 2KBr(aq)+ Cl2(g)$\rarr$2KCl(aq)+ Br2(l) 
E) CaBr2(aq)+ H2SO4(aq)$\rarr$ CaSO4(s)+ 2HBr(g)

Exam 4: Reactions in Aqueous Solutions

What volume of concentrated nitric acid (15.0 M)is required to make 100.mL of a 3.0 M nitric acid solution?

Identify the precipitate(s)formed when solutions of Na3PO4(aq), Ca(NO3)2(aq), and NH4ClO3(aq)are mixed.

Identify the major ionic species present in an aqueous solution of H2SO4.

What element is oxidized in the following chemical reaction? 3Cu + 8HNO3 →\rarr→ 3Cu(NO3)2 + 2NO + 4H2O

Which of the following will occur when solutions of CuSO4(aq)and BaCl2(aq)are mixed?

Identify the oxidizing agent in the following chemical reaction. 2MnO4- + 5H2SO3 →\rarr→ 2Mn2+ + 5SO42- + 4H+ + 3H2O

Identify the major ionic species present in an aqueous solution of C6H12O6 (glucose).

Name and give the formulas for six strong acids.

Which of the following is NOT a redox reaction?

Identify the major ions present in an aqueous LiOH solution.

Identify the following compound as a strong electrolyte, weak electrolyte, or nonelectrolyte: H2CO3

Determine the correct oxidation numbers for all three elements in Ca(ClO)2 in the order that the elements are shown in the formula?

What mass of C12H22O11 (sucrose)is needed to prepare 255 mL of a 0.570 M solution of sucrose in water?

What element is reduced in the following chemical reaction? Cu + 2H2SO4 →\rarr→ CuSO4 + SO2 + 2H2O

Identify the oxidizing agent in the following reaction. 2KBr + F2 →\rarr→ Br2 + 2KF

A 110.mL solution of 0.340 M HCl(aq)is mixed with a solution of 330.mL of 0.150 M HNO3(aq).The solution is then diluted to a final volume of 1.00 L.How many moles of H+ are present in the final solution?

The oxidation number of N in NaNO3 is

Which of the following represents an acid-base neutralization reaction?

Chemistry: the Study of Change

Atoms, Molecules, and Ions

Mass Relationships in Chemical Reactions

Gases

Thermochemistry

Quantum Theory and the Electronic Structure of Atoms

Periodic Relationships Among the Elements

Chemical Bonding I: Basic Concepts

Chemical Bonding Ii: Molecular Geometry and Hybridization of Atomic Orbitals

Intermolecular Forces and Liquids and Solids

Physical Properties of Solutions

Chemical Kinetics

Chemical Equilibrium

Acids and Bases

Acid-Base Equilibria and Solubility Equilibria

Entropy Free Energy and Equilibrium

Electrochemistry

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Chemistry in the Atmosphere

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Filters

Identify the precipitate(s)formed when solutions of Na₃PO₄(aq), Ca(NO₃)₂(aq), and NH₄ClO₃(aq)are mixed.

Identify the major ionic species present in an aqueous solution of H₂SO₄.

What element is oxidized in the following chemical reaction? 3Cu + 8HNO₃ $\rarr$ 3Cu(NO₃)₂ + 2NO + 4H₂O

Which of the following will occur when solutions of CuSO₄(aq)and BaCl₂(aq)are mixed?

Identify the oxidizing agent in the following chemical reaction. 2MnO₄^- + 5H₂SO₃ $\rarr$ 2Mn²⁺ + 5SO₄^2- + 4H⁺ + 3H₂O

Identify the major ionic species present in an aqueous solution of C₆H₁₂O₆ (glucose).

Identify the following compound as a strong electrolyte, weak electrolyte, or nonelectrolyte: H₂CO₃

Determine the correct oxidation numbers for all three elements in Ca(ClO)₂ in the order that the elements are shown in the formula?

What mass of C₁₂H₂₂O₁₁ (sucrose)is needed to prepare 255 mL of a 0.570 M solution of sucrose in water?

What element is reduced in the following chemical reaction? Cu + 2H₂SO₄ $\rarr$ CuSO₄ + SO₂ + 2H₂O

Identify the oxidizing agent in the following reaction. 2KBr + F₂ $\rarr$ Br₂ + 2KF

A 110.mL solution of 0.340 M HCl(aq)is mixed with a solution of 330.mL of 0.150 M HNO₃(aq).The solution is then diluted to a final volume of 1.00 L.How many moles of H⁺ are present in the final solution?

The oxidation number of N in NaNO₃ is