Zinc dissolves in hydrochloric acid to yield hydrogen gas: Zn(s) + 2HCl(aq) $\rarr$ ZnCl2(aq) + H2(g) What mass of hydrogen gas is produced when a 7.35 g chunk of zinc dissolves in 500. mL of 1.200M HCl

A) 0.605 g B) 0.113 g C) 0.302 g D) 0.453 g E) 0.227 g A) 0.605 g B) 0.113 g C) 0.302 g D) 0.453 g E) 0.227 g

Identify the precipitate(s) formed when solutions of Na2SO4(aq), Ba(NO3)2(aq), and NH4ClO4(aq) are mixed.

A) Ba(ClO4)2 B) BaSO4 and (NH4)2SO4 C) NH4NO3 and NaClO4 D) BaSO4 E) NaClO4 A) Ba(ClO4)2 B) BaSO4 and (NH4)2SO4 C) NH4NO3 and NaClO4 D) BaSO4 E) NaClO4

The oxidation number of N in N2H4 is

A) +4. B) -4. C) +2. D) -2. E) 0. A) +4. B) -4. C) +2. D) -2. E) 0.

The oxidation number of Fe in K3Fe(CN)6 is

A) +3. B) +2. C) +1. D) -3. E) -4. A) +3. B) +2. C) +1. D) -3. E) -4.

The oxidation number of Cr in Cr2O72- is

A) -12. B) -7. C) -2. D) +6. E) +7. A) -12. B) -7. C) -2. D) +6. E) +7.

The oxidation number of S in K2SO4 is

A) +6. B) +4. C) +2. D) -1. E) None of the above. A) +6. B) +4. C) +2. D) -1. E) None of the above.

What compound is formed, as a precipitate, when solutions of Na3PO4(aq), Ca(NO3)2(aq), and NH4ClO3(aq) are mixed

A) Ca2(PO4)2 B) Ca3(PO4)2 C) Ca3PO4 D) CaPO4 E) None of the above A) Ca2(PO4)2 B) Ca3(PO4)2 C) Ca3PO4 D) CaPO4 E) None of the above

Exam 4: Reactions in Aqueous Solutions

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The following two equations show both the correct balanced molecular and net ionic equations for the reaction that would occur between Al(s) and Co(NO₃)₂(aq).Molecular equation: 2Al(s) + 3Co(NO₃)₂(aq) $\rarr$ 2Al(NO₃)₃(aq) + 3Co(s) Net ionic equation: 2Al(s) + Co²⁺(aq) $\rarr$ 2Al³⁺(aq) + Co(s)

(True/False)

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Question 81

Zinc dissolves in hydrochloric acid to yield hydrogen gas: Zn(s) + 2HCl(aq) $\rarr$ ZnCl₂(aq) + H₂(g) What mass of hydrogen gas is produced when a 7.35 g chunk of zinc dissolves in 500. mL of 1.200M HCl

(Multiple Choice)

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Question 82

When solid iron(II) hydroxide is added to water, the resulting solution contains 1.4* 10^-3g of dissolved iron(II) hydroxide per liter of solution. What is the hydroxide ion concentration in this solution

(Multiple Choice)

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Question 83

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

(Multiple Choice)

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Question 84

The following equation is an example of a net ionic equation. Na⁺(aq) + Br^-(aq) + Ag⁺(aq) + NO₃^-(aq) $\rarr$ AgBr(s) + Na⁺(aq) + NO₃^-(aq)

(True/False)

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Question 85

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

(True/False)

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Question 86

Which of the following represents a precipitation reaction

(Multiple Choice)

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Question 87

Which of the following compounds is a nonelectrolyte

(Multiple Choice)

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Question 88

Identify the precipitate(s) formed when solutions of Na₂SO₄(aq), Ba(NO₃)₂(aq), and NH₄ClO₄(aq) are mixed.

(Multiple Choice)

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Question 89

Pb is the oxidizing agent in this process. (Batteries in our cars generate electricity by the following chemical reaction.) Pb + PbO₂ + 2H₂SO₄ $\rarr$ 2PbSO₄ + 2H₂O

(True/False)

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Question 90

The oxidation number of N in N₂H₄ is

(Multiple Choice)

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Question 91

Th⁺⁴ is the reducing agent in this process.(Thorium metal is prepared by reacting thorium oxide with calcium as depicted below.) ThO₂ + 2Ca $\rarr$ Th + 2CaO

(True/False)

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Question 92

The oxidation number of Fe in K₃Fe(CN)₆ is

(Multiple Choice)

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Question 93

The oxidation number of Cr in Cr₂O₇^2- is

(Multiple Choice)

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Question 94

17.5 mL of a 0.1050 M Na₂CO₃ solution is added to 46.0 mL of 0.1250 M NaCl. What is the concentration of sodium ion in the final solution

(Multiple Choice)

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Question 95

The oxidation number of S in K₂SO₄ is

(Multiple Choice)

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Question 96

What compound is formed, as a precipitate, when solutions of Na₃PO₄(aq), Ca(NO₃)₂(aq), and NH₄ClO₃(aq) are mixed

(Multiple Choice)

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Question 97

Identify the correct net ionic equation for the reaction that occurs when solutions of HClO₄ and Ba(OH)₂ are mixed.

(Multiple Choice)

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Question 98

Ca is the oxidizing agent in this process. (Thorium metal is prepared by reacting thorium oxide with calcium as shown below.) ThO₂ + 2Ca $\rarr$ Th + 2CaO

(True/False)

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Question 99

Al is the reducing agent in the following reaction.4Al + 3O₂ $\rarr$ 2Al₂O₃

(True/False)

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Question 100

Showing 81 - 100 of 192

Exam 4: Reactions in Aqueous Solutions

Zinc dissolves in hydrochloric acid to yield hydrogen gas: Zn(s) + 2HCl(aq) →\rarr→ ZnCl2(aq) + H2(g) What mass of hydrogen gas is produced when a 7.35 g chunk of zinc dissolves in 500. mL of 1.200M HCl

When solid iron(II) hydroxide is added to water, the resulting solution contains 1.4* 10-3g of dissolved iron(II) hydroxide per liter of solution. What is the hydroxide ion concentration in this solution

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

The following equation is an example of a net ionic equation. Na+(aq) + Br-(aq) + Ag+(aq) + NO3-(aq) →\rarr→ AgBr(s) + Na+(aq) + NO3-(aq)

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

Which of the following represents a precipitation reaction

Which of the following compounds is a nonelectrolyte

Identify the precipitate(s) formed when solutions of Na2SO4(aq), Ba(NO3)2(aq), and NH4ClO4(aq) are mixed.

Pb is the oxidizing agent in this process. (Batteries in our cars generate electricity by the following chemical reaction.) Pb + PbO2 + 2H2SO4 →\rarr→ 2PbSO4 + 2H2O

The oxidation number of N in N2H4 is

Th+4 is the reducing agent in this process.(Thorium metal is prepared by reacting thorium oxide with calcium as depicted below.) ThO2 + 2Ca →\rarr→ Th + 2CaO

The oxidation number of Fe in K3Fe(CN)6 is

The oxidation number of Cr in Cr2O72- is

17.5 mL of a 0.1050 M Na2CO3 solution is added to 46.0 mL of 0.1250 M NaCl. What is the concentration of sodium ion in the final solution

The oxidation number of S in K2SO4 is

What compound is formed, as a precipitate, when solutions of Na3PO4(aq), Ca(NO3)2(aq), and NH4ClO3(aq) are mixed

Identify the correct net ionic equation for the reaction that occurs when solutions of HClO4 and Ba(OH)2 are mixed.

Ca is the oxidizing agent in this process. (Thorium metal is prepared by reacting thorium oxide with calcium as shown below.) ThO2 + 2Ca →\rarr→ Th + 2CaO

Al is the reducing agent in the following reaction.4Al + 3O2 →\rarr→ 2Al2O3

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Zinc dissolves in hydrochloric acid to yield hydrogen gas: Zn(s) + 2HCl(aq) $\rarr$ ZnCl₂(aq) + H₂(g) What mass of hydrogen gas is produced when a 7.35 g chunk of zinc dissolves in 500. mL of 1.200M HCl

When solid iron(II) hydroxide is added to water, the resulting solution contains 1.4* 10^-3g of dissolved iron(II) hydroxide per liter of solution. What is the hydroxide ion concentration in this solution

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

The following equation is an example of a net ionic equation. Na⁺(aq) + Br^-(aq) + Ag⁺(aq) + NO₃^-(aq) $\rarr$ AgBr(s) + Na⁺(aq) + NO₃^-(aq)

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

Identify the precipitate(s) formed when solutions of Na₂SO₄(aq), Ba(NO₃)₂(aq), and NH₄ClO₄(aq) are mixed.

Pb is the oxidizing agent in this process. (Batteries in our cars generate electricity by the following chemical reaction.) Pb + PbO₂ + 2H₂SO₄ $\rarr$ 2PbSO₄ + 2H₂O

The oxidation number of N in N₂H₄ is

Th⁺⁴ is the reducing agent in this process.(Thorium metal is prepared by reacting thorium oxide with calcium as depicted below.) ThO₂ + 2Ca $\rarr$ Th + 2CaO

The oxidation number of Fe in K₃Fe(CN)₆ is

The oxidation number of Cr in Cr₂O₇^2- is

17.5 mL of a 0.1050 M Na₂CO₃ solution is added to 46.0 mL of 0.1250 M NaCl. What is the concentration of sodium ion in the final solution

The oxidation number of S in K₂SO₄ is

What compound is formed, as a precipitate, when solutions of Na₃PO₄(aq), Ca(NO₃)₂(aq), and NH₄ClO₃(aq) are mixed

Identify the correct net ionic equation for the reaction that occurs when solutions of HClO₄ and Ba(OH)₂ are mixed.

Ca is the oxidizing agent in this process. (Thorium metal is prepared by reacting thorium oxide with calcium as shown below.) ThO₂ + 2Ca $\rarr$ Th + 2CaO

Al is the reducing agent in the following reaction.4Al + 3O₂ $\rarr$ 2Al₂O₃