What is the coefficient for sulfur in the following redox reaction? S(s) + KClO3(s) $\rightarrow$ SO2(g) + KCl(s) + bang!

A) 1 B) 2 C) 3 D) 4 E) 5 A) 1 B) 2 C) 3 D) 4 E) 5

refer to the following reaction which occurs in basic solution. CrOS1U1B14S1U1B0S1U1P12-S1S1P0 + PHS1U1B13S1U1B0 $\rightarrow$Cr(OH)S1U1B14S1U1B0S1U1P1-S1S1P0 + PS1U1B14S1U1B0 -Which of the following are oxidizing agents in the forward and reverse directions, respectively?

A) CrO42- and PH3 B) CrO42- and P4 C) Cr(OH)4- and PH3 D) Cr(OH)4- and P4 E) CrO42- and OH- A) CrO42- and PH3 B) CrO42- and P4 C) Cr(OH)4- and PH3 D) Cr(OH)4- and P4 E) CrO42- and OH-

A current of 2.0 amps passed through a molten solution of the salt MCl2 for a period of 30 minutes produces 1.32 g of Cl2 gas and 0.453 g of M. Which of the following metals is present in this compound?

A) Mg B) Ca C) Zn D) Sr E) Hg A) Mg B) Ca C) Zn D) Sr E) Hg

Which of the following is true about the reaction below? 2VO2+ (aq) + Br2(s) + 2 H2O(l) $\rightarrow$ 2VO2+(aq) + 2 Br - (aq) + 4H+

A) Br2 is acting as a reducing agent. B) VO2+ is acting as a weak reducing agent. C) VO2+ is oxidized. D) H2O is reduced. E) H+ is acting as a weak reducing agent. A) Br2 is acting as a reducing agent. B) VO2+ is acting as a weak reducing agent. C) VO2+ is oxidized. D) H2O is reduced. E) H+ is acting as a weak reducing agent.

Redox Reactions in Basic Solutions refer to the following reaction which occurs in basic solution: OClS1U1P1-S1S1P0(aq) $\rightarrow$ ClOS1U1B12S1U1B0S1U1P1-S1S1P0(aq) + ClS1U1B12S1U1B0(aq) -How many OH- ions are involved in the simplest balanced equation for this reaction?

A) 0 B) 1 C) 2 D) 3 E) 4 A) 0 B) 1 C) 2 D) 3 E) 4

Redox Reactions in Basic Solutions refer to the following reaction which occurs in basic solution: OClS1U1P1-S1S1P0(aq) $\rightarrow$ ClOS1U1B12S1U1B0S1U1P1-S1S1P0(aq) + ClS1U1B12S1U1B0(aq) -What is the net effect on the OH- ion concentration in this reaction?

A) The OH- ion concentration increases. B) The OH- ion concentration decreases. C) The OH- ion concentration remains the same. D) There is no way to predict what happens to the OH- ion concentration in this reaction. A) The OH- ion concentration increases. B) The OH- ion concentration decreases. C) The OH- ion concentration remains the same. D) There is no way to predict what happens to the OH- ion concentration in this reaction.

The following equation, when balanced, involves a total of ___ electrons. ClO3-(aq) + I2(aq) + H2O(l) $\rightarrow$ IO3-(aq) + Cl-(aq) + H+(aq)

A) 5 B) 6 C) 12 D) 24 E) 30 A) 5 B) 6 C) 12 D) 24 E) 30

refer to the following incomplete, unbalanced equation CrS1U1B12S1U1B0OS1U1B17S1U1B0S1U1P12-S1S1P0(aq) + NO(g) CrS1U1P13+S1S1P0(aq) + NOS1U1B13S1U1B0S1U1P1-S1S1P0(aq) -What is the coefficient of the NO in the balanced equation?

A) 1 B) 2 C) 3 D) 4 E) 6 A) 1 B) 2 C) 3 D) 4 E) 6

Exam 12: Oxidation-Reduction Reactions

What is the correct coefficient for Na₂MnO₄ in the balanced equation for the air oxidation of manganese dioxide to sodium manganate in the presence of sodium carbonate? MnO₂(s) + Na₂CO₃(aq) + O₂(g) $\rightarrow$ CO₂(g) + Na₂MnO₄(aq)

(Multiple Choice)

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Question 61

What is the coefficient for sulfur in the following redox reaction? S(s) + KClO₃(s) $\rightarrow$ SO₂(g) + KCl(s) + bang!

(Multiple Choice)

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Question 62

refer to the following reaction which occurs in basic solution. CrO₄^2- + PH₃ $\rightarrow$ Cr(OH)₄^- + P₄ -Which of the following are oxidizing agents in the forward and reverse directions, respectively?

(Multiple Choice)

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Question 63

For the following reaction, identify the oxidizing agents in the forward and reverse directions, respectively.. P₄(s) + HNO₃(aq) $\rightarrow$ H₃PO₄(aq) + NO(g)

(Multiple Choice)

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Question 64

‪ Determining Oxidation Numbers -Determine the oxidation number of arsenic in the anion, HAsO₄² ^- .

(Multiple Choice)

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Question 65

A current of 2.0 amps passed through a molten solution of the salt MCl₂ for a period of 30 minutes produces 1.32 g of Cl₂ gas and 0.453 g of M. Which of the following metals is present in this compound?

(Multiple Choice)

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Question 66

Which of the following is true about the reaction below? 2VO²⁺(aq) + Br₂(s) + 2 H₂O(l) $\rightarrow$ 2VO₂⁺(aq) + 2 Br ^- (aq) + 4H⁺

(Multiple Choice)

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Question 67

What is the ratio of the weight of Cl₂ produced at the anode to the weight of Al produced at the cathode when 5 moles of electrons are passed through a molten sample of AlCl₃?

(Multiple Choice)

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Question 68

Redox Reactions in Basic Solutions refer to the following reaction which occurs in basic solution: OCl^-(aq) $\rightarrow$ ClO₂^-(aq) + Cl₂(aq) -How many OH^- ions are involved in the simplest balanced equation for this reaction?

(Multiple Choice)

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Question 69

Which of the following statements about this reaction is correct?

(Multiple Choice)

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Question 70

Which of the following pairs of ions can't coexist in aqueous solution under standard-state conditions because a spontaneous redox reaction occurs?

(Multiple Choice)

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Question 71

What is the oxidation state of the tin atom in an unknown salt if 14.8 grams of tin are plated out when a current of 40 amps is passed through a molten solution of this salt for 10 minutes?

(Multiple Choice)

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Question 72

Redox Reactions in Basic Solutions refer to the following reaction which occurs in basic solution: OCl^-(aq) $\rightarrow$ ClO₂^-(aq) + Cl₂(aq) -What is the net effect on the OH^- ion concentration in this reaction?

(Multiple Choice)

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Question 73

Use a table of standard reduction potentials to determine which of the following is the strongest reducing agent.

(Multiple Choice)

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Question 74

The following equation, when balanced, involves a total of ___ electrons. ClO₃^-(aq) + I₂(aq) + H₂O(l) $\rightarrow$ IO₃^-(aq) + Cl^-(aq) + H⁺(aq)

(Multiple Choice)

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Question 75

Which of the following statements about the electrolysis of an aqueous solution of NaCl is true?

(Multiple Choice)

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Question 76

Balance the following redox reaction. Clearly show the two balanced half-reactions and indicate which represents oxidation and which reduction. H₂O₂(aq) + NO(g) + H⁺(aq) $\rightarrow$ NO₃^-(aq)

(Essay)

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Question 77

In the electrolysis of NaBr(aq), which of the following products is least likely to be found?

(Multiple Choice)

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Question 78

A current of 1.5 amps is applied to a 1.00 L solution of 0.100 M hydrochloric acid for 1.0 hr. What is the pH of the solution after electrolysis is complete?

(Short Answer)

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Question 79

refer to the following incomplete, unbalanced equation Cr₂O₇^2-(aq) + NO(g) Cr³⁺(aq) + NO₃^-(aq) -What is the coefficient of the NO in the balanced equation?

(Multiple Choice)

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Question 80

Showing 61 - 80 of 81

What is the correct coefficient for Na₂MnO₄ in the balanced equation for the air oxidation of manganese dioxide to sodium manganate in the presence of sodium carbonate? MnO₂(s) + Na₂CO₃(aq) + O₂(g) $\rightarrow$ CO₂(g) + Na₂MnO₄(aq)

What is the coefficient for sulfur in the following redox reaction? S(s) + KClO₃(s) $\rightarrow$ SO₂(g) + KCl(s) + bang!

refer to the following reaction which occurs in basic solution. CrO₄^2- + PH₃ $\rightarrow$ Cr(OH)₄^- + P₄ -Which of the following are oxidizing agents in the forward and reverse directions, respectively?

For the following reaction, identify the oxidizing agents in the forward and reverse directions, respectively.. P₄(s) + HNO₃(aq) $\rightarrow$ H₃PO₄(aq) + NO(g)

‪ Determining Oxidation Numbers -Determine the oxidation number of arsenic in the anion, HAsO₄² ^- .

A current of 2.0 amps passed through a molten solution of the salt MCl₂ for a period of 30 minutes produces 1.32 g of Cl₂ gas and 0.453 g of M. Which of the following metals is present in this compound?

Which of the following is true about the reaction below? 2VO²⁺(aq) + Br₂(s) + 2 H₂O(l) $\rightarrow$ 2VO₂⁺(aq) + 2 Br ^- (aq) + 4H⁺

What is the ratio of the weight of Cl₂ produced at the anode to the weight of Al produced at the cathode when 5 moles of electrons are passed through a molten sample of AlCl₃?

Redox Reactions in Basic Solutions refer to the following reaction which occurs in basic solution: OCl^-(aq) $\rightarrow$ ClO₂^-(aq) + Cl₂(aq) -How many OH^- ions are involved in the simplest balanced equation for this reaction?

Which of the following statements about this reaction is correct?

Which of the following pairs of ions can't coexist in aqueous solution under standard-state conditions because a spontaneous redox reaction occurs?

What is the oxidation state of the tin atom in an unknown salt if 14.8 grams of tin are plated out when a current of 40 amps is passed through a molten solution of this salt for 10 minutes?

Redox Reactions in Basic Solutions refer to the following reaction which occurs in basic solution: OCl^-(aq) $\rightarrow$ ClO₂^-(aq) + Cl₂(aq) -What is the net effect on the OH^- ion concentration in this reaction?

Use a table of standard reduction potentials to determine which of the following is the strongest reducing agent.

The following equation, when balanced, involves a total of ___ electrons. ClO₃^-(aq) + I₂(aq) + H₂O(l) $\rightarrow$ IO₃^-(aq) + Cl^-(aq) + H⁺(aq)

Which of the following statements about the electrolysis of an aqueous solution of NaCl is true?

Balance the following redox reaction. Clearly show the two balanced half-reactions and indicate which represents oxidation and which reduction. H₂O₂(aq) + NO(g) + H⁺(aq) $\rightarrow$ NO₃^-(aq)

In the electrolysis of NaBr(aq), which of the following products is least likely to be found?

A current of 1.5 amps is applied to a 1.00 L solution of 0.100 M hydrochloric acid for 1.0 hr. What is the pH of the solution after electrolysis is complete?

refer to the following incomplete, unbalanced equation Cr₂O₇^2-(aq) + NO(g) Cr³⁺(aq) + NO₃^-(aq) -What is the coefficient of the NO in the balanced equation?

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Exam 12: Oxidation-Reduction Reactions

What is the correct coefficient for Na2MnO4 in the balanced equation for the air oxidation of manganese dioxide to sodium manganate in the presence of sodium carbonate? MnO2(s) + Na2CO3(aq) + O2(g) →\rightarrow→ CO2(g) + Na2MnO4(aq)

What is the coefficient for sulfur in the following redox reaction? S(s) + KClO3(s) →\rightarrow→ SO2(g) + KCl(s) + bang!

refer to the following reaction which occurs in basic solution. CrO42- + PH3 →\rightarrow→ Cr(OH)4- + P4 -Which of the following are oxidizing agents in the forward and reverse directions, respectively?

For the following reaction, identify the oxidizing agents in the forward and reverse directions, respectively.. P4(s) + HNO3(aq) →\rightarrow→ H3PO4(aq) + NO(g)

‪ Determining Oxidation Numbers -Determine the oxidation number of arsenic in the anion, HAsO42 - .

A current of 2.0 amps passed through a molten solution of the salt MCl2 for a period of 30 minutes produces 1.32 g of Cl2 gas and 0.453 g of M. Which of the following metals is present in this compound?

Which of the following is true about the reaction below? 2VO2+ (aq) + Br2(s) + 2 H2O(l) →\rightarrow→ 2VO2+(aq) + 2 Br - (aq) + 4H+

What is the ratio of the weight of Cl2 produced at the anode to the weight of Al produced at the cathode when 5 moles of electrons are passed through a molten sample of AlCl3?

Redox Reactions in Basic Solutions refer to the following reaction which occurs in basic solution: OCl-(aq) →\rightarrow→ ClO2-(aq) + Cl2(aq) -How many OH- ions are involved in the simplest balanced equation for this reaction?

Which of the following statements about this reaction is correct?

Which of the following pairs of ions can't coexist in aqueous solution under standard-state conditions because a spontaneous redox reaction occurs?

What is the oxidation state of the tin atom in an unknown salt if 14.8 grams of tin are plated out when a current of 40 amps is passed through a molten solution of this salt for 10 minutes?

Redox Reactions in Basic Solutions refer to the following reaction which occurs in basic solution: OCl-(aq) →\rightarrow→ ClO2-(aq) + Cl2(aq) -What is the net effect on the OH- ion concentration in this reaction?

Use a table of standard reduction potentials to determine which of the following is the strongest reducing agent.

The following equation, when balanced, involves a total of ___ electrons. ClO3-(aq) + I2(aq) + H2O(l) →\rightarrow→ IO3-(aq) + Cl-(aq) + H+(aq)

Which of the following statements about the electrolysis of an aqueous solution of NaCl is true?

Balance the following redox reaction. Clearly show the two balanced half-reactions and indicate which represents oxidation and which reduction. H2O2(aq) + NO(g) + H+(aq) →\rightarrow→ NO3-(aq)

In the electrolysis of NaBr(aq), which of the following products is least likely to be found?

A current of 1.5 amps is applied to a 1.00 L solution of 0.100 M hydrochloric acid for 1.0 hr. What is the pH of the solution after electrolysis is complete?

refer to the following incomplete, unbalanced equation Cr2O72-(aq) + NO(g) Cr3+(aq) + NO3-(aq) -What is the coefficient of the NO in the balanced equation?

Elements Compounds

The Mole

Structure of the Atom

The Covalent Bond

Ionic and Metallic Bonds

Gases

Making and Breaking of Bonds

Liquids and Solutions

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Acids and Bases

Chemical Thermodynamics

Kinetics

Nuclear Chemistry

Organic Chemistry

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What is the correct coefficient for Na₂MnO₄ in the balanced equation for the air oxidation of manganese dioxide to sodium manganate in the presence of sodium carbonate? MnO₂(s) + Na₂CO₃(aq) + O₂(g) $\rightarrow$ CO₂(g) + Na₂MnO₄(aq)

What is the coefficient for sulfur in the following redox reaction? S(s) + KClO₃(s) $\rightarrow$ SO₂(g) + KCl(s) + bang!

refer to the following reaction which occurs in basic solution. CrO₄^2- + PH₃ $\rightarrow$ Cr(OH)₄^- + P₄ -Which of the following are oxidizing agents in the forward and reverse directions, respectively?

For the following reaction, identify the oxidizing agents in the forward and reverse directions, respectively.. P₄(s) + HNO₃(aq) $\rightarrow$ H₃PO₄(aq) + NO(g)

‪ Determining Oxidation Numbers -Determine the oxidation number of arsenic in the anion, HAsO₄² ^- .

A current of 2.0 amps passed through a molten solution of the salt MCl₂ for a period of 30 minutes produces 1.32 g of Cl₂ gas and 0.453 g of M. Which of the following metals is present in this compound?

Which of the following is true about the reaction below? 2VO²⁺(aq) + Br₂(s) + 2 H₂O(l) $\rightarrow$ 2VO₂⁺(aq) + 2 Br ^- (aq) + 4H⁺

What is the ratio of the weight of Cl₂ produced at the anode to the weight of Al produced at the cathode when 5 moles of electrons are passed through a molten sample of AlCl₃?

Redox Reactions in Basic Solutions refer to the following reaction which occurs in basic solution: OCl^-(aq) $\rightarrow$ ClO₂^-(aq) + Cl₂(aq) -How many OH^- ions are involved in the simplest balanced equation for this reaction?

Redox Reactions in Basic Solutions refer to the following reaction which occurs in basic solution: OCl^-(aq) $\rightarrow$ ClO₂^-(aq) + Cl₂(aq) -What is the net effect on the OH^- ion concentration in this reaction?

The following equation, when balanced, involves a total of ___ electrons. ClO₃^-(aq) + I₂(aq) + H₂O(l) $\rightarrow$ IO₃^-(aq) + Cl^-(aq) + H⁺(aq)

Balance the following redox reaction. Clearly show the two balanced half-reactions and indicate which represents oxidation and which reduction. H₂O₂(aq) + NO(g) + H⁺(aq) $\rightarrow$ NO₃^-(aq)

refer to the following incomplete, unbalanced equation Cr₂O₇^2-(aq) + NO(g) Cr³⁺(aq) + NO₃^-(aq) -What is the coefficient of the NO in the balanced equation?