Consider a voltaic cell that corresponds to the following reaction: Fe(s) + Ni2+(aq) $\rightarrow$Fe2+(aq) + Ni(s) Which of the following statements is correct?

A) Iron is the oxidizing agent. B) The Ni2+ solution must be in the half-cell with the iron electrode. C) No salt bridge is necessary, since the charge is 2+ on both sides of the equation. D) The nickel electrode is the cathode. E) Four electrons will be transferred per atom of iron that reacts. A) Iron is the oxidizing agent. B) The Ni2+ solution must be in the half-cell with the iron electrode. C) No salt bridge is necessary, since the charge is 2+ on both sides of the equation. D) The nickel electrode is the cathode. E) Four electrons will be transferred per atom of iron that reacts.

Examine the following reaction: 5FeCl2(aq) + KMnO4(aq) + 8HCl(aq) $\rightarrow$ 5FeCl3(aq) + MnCl2(aq) + KCl(aq) + 4H2O(l) Which element has undergone oxidation?

A) Fe B) H C) Cl D) O E) Mn A) Fe B) H C) Cl D) O E) Mn

Consider the reaction: Zn(s) + H2SO4(aq) $\rightarrow$ ZnSO4(aq) + H2(g) Which species is reduced, and how many electrons are transferred per atom of zinc that reacts?

A) Zn, 2 electrons B) H+, 2 electrons C) SO42-, 4 electrons D) Zn2+, 4 electrons E) H2, 2 electrons A) Zn, 2 electrons B) H+, 2 electrons C) SO42-, 4 electrons D) Zn2+, 4 electrons E) H2, 2 electrons

Examine the following reaction: 5FeCl2(aq) + KMnO4(aq) + 8HCl(aq) - 5FeCl3(aq) + MnCl2(aq) + KCl(aq) + 4H2O(l) Which element has undergone reduction?

A) Fe B) H C) Cl D) O E) Mn A) Fe B) H C) Cl D) O E) Mn

Consider the reaction: H2O(l) + 3SO32-(aq) + 2MnO4-(aq) $\rightarrow$ 3SO42-(aq) + 2MnO2(s) + 2OH-(aq) Which species is oxidized?

A) H2O B) SO32- C) MnO4- D) SO42- E) MnO2 A) H2O B) SO32- C) MnO4- D) SO42- E) MnO2

Consider a voltaic cell that corresponds to the following reaction: Cu(s) + 2Ag+(aq) $\rightarrow$Cu2+(aq) + Ag(s) If this reaction takes place in the electrochemical cell shown in the figure, which of the following statements is incorrect?

A) I is the copper electrode, which is the anode. B) II is the Ag+ solution. C) III is the salt bridge. D) V contains the substance that is being reduced. E) V is the silver electrode, which is the cathode. A) I is the copper electrode, which is the anode. B) II is the Ag+ solution. C) III is the salt bridge. D) V contains the substance that is being reduced. E) V is the silver electrode, which is the cathode.

A lead-acid battery that is used in cars and trucks is powered by the reaction: PbO2(s) + Pb(s) + 2H2SO4(aq) $\rightarrow$2PbSO4(s) + H2O(l) The substance that is the oxidizing agent in this battery is:

A) PbSO4 B) H2O C) PbO2 D) Pb E) H2SO4 A) PbSO4 B) H2O C) PbO2 D) Pb E) H2SO4

Consider a voltaic cell that corresponds to the following reaction: Mg(s) + Sn2+(aq) $\rightarrow$ Mg2+(aq) + Sn(s) If this reaction takes place in the electrochemical cell shown in the figure, which of the following statements is incorrect?

A) I is the magnesium electrode, which is the anode. B) II is the Mg2+ solution. C) III is the salt bridge. D) IV contains the substance that is being oxidized. E) V is the tin electrode, which is the cathode. A) I is the magnesium electrode, which is the anode. B) II is the Mg2+ solution. C) III is the salt bridge. D) IV contains the substance that is being oxidized. E) V is the tin electrode, which is the cathode.

Consider the reaction: Cu(s) + 4HNO3(aq) $\rightarrow$ Cu(NO3)2(aq) + 2NO2(g) + 2OH-(aq) Which species is the reducing agent?

A) OH- B) NO2 C) Cu(NO3)2 D) HNO3 E) Cu A) OH- B) NO2 C) Cu(NO3)2 D) HNO3 E) Cu

The following reaction occurs in a lead storage battery: PbO2(s) + Pb(s) + H2SO4(aq) ⇌ 2PbSO4(s) + 2H2O(l) Which statement is true?

A) The concentration of H2SO4 increases as the battery discharges. B) Pb is formed at the anode during charging. C) PbO2 is formed at the anode during charging. D) The mass of Pb decreases during charging. E) The mass of PbSO4 remains constant during charging and discharging. A) The concentration of H2SO4 increases as the battery discharges. B) Pb is formed at the anode during charging. C) PbO2 is formed at the anode during charging. D) The mass of Pb decreases during charging. E) The mass of PbSO4 remains constant during charging and discharging.

Consider the reaction: H2O(l) + 3SO32-(aq) + 2MnO4-(aq) $\rightarrow$ 3SO42-(aq) + 2MnO2(s) + 2OH-(aq) Which species is reduced?

A) H2O B) SO32- C) MnO4- D) SO42- E) MnO2 A) H2O B) SO32- C) MnO4- D) SO42- E) MnO2

Exam 14: Oxidation-Reduction Reactions

Consider a voltaic cell that corresponds to the following reaction: Fe(s) + Ni²⁺(aq) $\rightarrow$ Fe²⁺(aq) + Ni(s) Which of the following statements is correct?

(Multiple Choice)

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Question 81

Given the following information about the activity series, predict whether the given reaction will occur or not.If it does occur, write a balanced equation.Cu < H₂ < Sn < Fe < Zn < Mg Mg(s) + ZnCl₂(aq) $\rightarrow$

(Multiple Choice)

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Question 82

Examine the following reaction: 5FeCl₂(aq) + KMnO₄(aq) + 8HCl(aq) $\rightarrow$ 5FeCl₃(aq) + MnCl₂(aq) + KCl(aq) + 4H₂O(l) Which element has undergone oxidation?

(Multiple Choice)

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Question 83

Consider the reaction: Zn(s) + H₂SO₄(aq) $\rightarrow$ ZnSO₄(aq) + H₂(g) Which species is reduced, and how many electrons are transferred per atom of zinc that reacts?

(Multiple Choice)

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Question 84

Examine the following reaction: 5FeCl₂(aq) + KMnO₄(aq) + 8HCl(aq) - 5FeCl₃(aq) + MnCl₂(aq) + KCl(aq) + 4H₂O(l) Which element has undergone reduction?

(Multiple Choice)

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Question 85

Consider the reaction: H₂O(l) + 3SO₃²^-(aq) + 2MnO₄^-(aq) $\rightarrow$ 3SO₄²^-(aq) + 2MnO₂(s) + 2OH^-(aq) Which species is oxidized?

(Multiple Choice)

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Question 86

Given the following information about the activity series, predict whether the given reaction will occur or not.If it does occur, write a balanced equation.Cu < H₂ < Sn < Fe < Zn < Mg Mg(s) + HCl(aq) $\rightarrow$

(Multiple Choice)

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Question 87

Consider a voltaic cell that corresponds to the following reaction: Cu(s) + 2Ag⁺(aq) $\rightarrow$ Cu²⁺(aq) + Ag(s) If this reaction takes place in the electrochemical cell shown in the figure, which of the following statements is incorrect? $Consider a voltaic cell that corresponds to the following reaction: Cu(s) + 2Ag+(aq) \rightarrow Cu2+(aq) + Ag(s) If this reaction takes place in the electrochemical cell shown in the figure, which of the following statements is incorrect?$

(Multiple Choice)

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Question 88

A lead-acid battery that is used in cars and trucks is powered by the reaction: PbO₂(s) + Pb(s) + 2H₂SO₄(aq) $\rightarrow$ 2PbSO₄(s) + H₂O(l) The substance that is the oxidizing agent in this battery is:

(Multiple Choice)

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Question 89

Given the following information about the activity series, predict whether the given reaction will occur or not.If it does occur, write a balanced equation. Cu < H₂ < Sn < Fe < Zn < Mg Cu(s) + SnCl₂(aq) $\rightarrow$

(Multiple Choice)

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Question 90

Consider a voltaic cell that corresponds to the following reaction: Mg(s) + Sn²⁺(aq) $\rightarrow$ Mg²⁺(aq) + Sn(s) If this reaction takes place in the electrochemical cell shown in the figure, which of the following statements is incorrect? $Consider a voltaic cell that corresponds to the following reaction: Mg(s) + Sn2+(aq) \rightarrow Mg2+(aq) + Sn(s) If this reaction takes place in the electrochemical cell shown in the figure, which of the following statements is incorrect?$

(Multiple Choice)

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Question 91

When a piece of copper wire is placed in a colorless solution of silver nitrate, the surface of the wire becomes coated with a shiny silvery material, and the copper begins to form aqueous copper(II) nitrate, which is blue.Which of the following statements regarding this reaction is correct?

(Multiple Choice)

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Question 92

In which of the following does chlorine have an oxidation number of +3?

(Multiple Choice)

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Question 93

Consider the reaction: Cu(s) + 4HNO₃(aq) $\rightarrow$ Cu(NO₃)₂(aq) + 2NO₂(g) + 2OH^-(aq) Which species is the reducing agent?

(Multiple Choice)

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Question 94

The chemical reactions that occur in voltaic (galvanic) cells are nonspontaneous, and require an outside electrical current to power the reaction.

(True/False)

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Question 95

If two metals are in contact with each other in a moist environment, one of the metals will begin to corrode.

(True/False)

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Question 96

The following reaction occurs in a lead storage battery: PbO₂(s) + Pb(s) + H₂SO₄(aq) ⇌ 2PbSO₄(s) + 2H₂O(l) Which statement is true?

(Multiple Choice)

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Question 97

In which of the following choices is the oxidation number incorrect?

(Multiple Choice)

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Question 98

Sodium is produced by electrolysis of molten sodium chloride.What are the products at the anode and cathode, respectively?

(Multiple Choice)

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Question 99

Consider the reaction: H₂O(l) + 3SO₃²^-(aq) + 2MnO₄^-(aq) $\rightarrow$ 3SO₄²^-(aq) + 2MnO₂(s) + 2OH^-(aq) Which species is reduced?

(Multiple Choice)

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Question 100

Showing 81 - 100 of 117

Consider a voltaic cell that corresponds to the following reaction: Fe(s) + Ni²⁺(aq) $\rightarrow$ Fe²⁺(aq) + Ni(s) Which of the following statements is correct?

Given the following information about the activity series, predict whether the given reaction will occur or not.If it does occur, write a balanced equation.Cu < H₂ < Sn < Fe < Zn < Mg Mg(s) + ZnCl₂(aq) $\rightarrow$

Examine the following reaction: 5FeCl₂(aq) + KMnO₄(aq) + 8HCl(aq) $\rightarrow$ 5FeCl₃(aq) + MnCl₂(aq) + KCl(aq) + 4H₂O(l) Which element has undergone oxidation?

Consider the reaction: Zn(s) + H₂SO₄(aq) $\rightarrow$ ZnSO₄(aq) + H₂(g) Which species is reduced, and how many electrons are transferred per atom of zinc that reacts?

Examine the following reaction: 5FeCl₂(aq) + KMnO₄(aq) + 8HCl(aq) - 5FeCl₃(aq) + MnCl₂(aq) + KCl(aq) + 4H₂O(l) Which element has undergone reduction?

Consider the reaction: H₂O(l) + 3SO₃²^-(aq) + 2MnO₄^-(aq) $\rightarrow$ 3SO₄²^-(aq) + 2MnO₂(s) + 2OH^-(aq) Which species is oxidized?

Given the following information about the activity series, predict whether the given reaction will occur or not.If it does occur, write a balanced equation.Cu < H₂ < Sn < Fe < Zn < Mg Mg(s) + HCl(aq) $\rightarrow$

A lead-acid battery that is used in cars and trucks is powered by the reaction: PbO₂(s) + Pb(s) + 2H₂SO₄(aq) $\rightarrow$ 2PbSO₄(s) + H₂O(l) The substance that is the oxidizing agent in this battery is:

Given the following information about the activity series, predict whether the given reaction will occur or not.If it does occur, write a balanced equation. Cu < H₂ < Sn < Fe < Zn < Mg Cu(s) + SnCl₂(aq) $\rightarrow$

When a piece of copper wire is placed in a colorless solution of silver nitrate, the surface of the wire becomes coated with a shiny silvery material, and the copper begins to form aqueous copper(II) nitrate, which is blue.Which of the following statements regarding this reaction is correct?

In which of the following does chlorine have an oxidation number of +3?

Consider the reaction: Cu(s) + 4HNO₃(aq) $\rightarrow$ Cu(NO₃)₂(aq) + 2NO₂(g) + 2OH^-(aq) Which species is the reducing agent?

The chemical reactions that occur in voltaic (galvanic) cells are nonspontaneous, and require an outside electrical current to power the reaction.

If two metals are in contact with each other in a moist environment, one of the metals will begin to corrode.

The following reaction occurs in a lead storage battery: PbO₂(s) + Pb(s) + H₂SO₄(aq) ⇌ 2PbSO₄(s) + 2H₂O(l) Which statement is true?

In which of the following choices is the oxidation number incorrect?

Sodium is produced by electrolysis of molten sodium chloride.What are the products at the anode and cathode, respectively?

Consider the reaction: H₂O(l) + 3SO₃²^-(aq) + 2MnO₄^-(aq) $\rightarrow$ 3SO₄²^-(aq) + 2MnO₂(s) + 2OH^-(aq) Which species is reduced?

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Exam 14: Oxidation-Reduction Reactions

Consider a voltaic cell that corresponds to the following reaction: Fe(s) + Ni2+(aq) →\rightarrow→ Fe2+(aq) + Ni(s) Which of the following statements is correct?

Given the following information about the activity series, predict whether the given reaction will occur or not.If it does occur, write a balanced equation.Cu < H2 < Sn < Fe < Zn < Mg Mg(s) + ZnCl2(aq) →\rightarrow→

Examine the following reaction: 5FeCl2(aq) + KMnO4(aq) + 8HCl(aq) →\rightarrow→ 5FeCl3(aq) + MnCl2(aq) + KCl(aq) + 4H2O(l) Which element has undergone oxidation?

Consider the reaction: Zn(s) + H2SO4(aq) →\rightarrow→ ZnSO4(aq) + H2(g) Which species is reduced, and how many electrons are transferred per atom of zinc that reacts?

Examine the following reaction: 5FeCl2(aq) + KMnO4(aq) + 8HCl(aq) - 5FeCl3(aq) + MnCl2(aq) + KCl(aq) + 4H2O(l) Which element has undergone reduction?

Consider the reaction: H2O(l) + 3SO32-(aq) + 2MnO4-(aq) →\rightarrow→ 3SO42-(aq) + 2MnO2(s) + 2OH-(aq) Which species is oxidized?

Given the following information about the activity series, predict whether the given reaction will occur or not.If it does occur, write a balanced equation.Cu < H2 < Sn < Fe < Zn < Mg Mg(s) + HCl(aq) →\rightarrow→

Consider a voltaic cell that corresponds to the following reaction: Cu(s) + 2Ag+(aq) →\rightarrow→ Cu2+(aq) + Ag(s) If this reaction takes place in the electrochemical cell shown in the figure, which of the following statements is incorrect?

A lead-acid battery that is used in cars and trucks is powered by the reaction: PbO2(s) + Pb(s) + 2H2SO4(aq) →\rightarrow→ 2PbSO4(s) + H2O(l) The substance that is the oxidizing agent in this battery is:

Given the following information about the activity series, predict whether the given reaction will occur or not.If it does occur, write a balanced equation. Cu < H2 < Sn < Fe < Zn < Mg Cu(s) + SnCl2(aq) →\rightarrow→

Consider a voltaic cell that corresponds to the following reaction: Mg(s) + Sn2+(aq) →\rightarrow→ Mg2+(aq) + Sn(s) If this reaction takes place in the electrochemical cell shown in the figure, which of the following statements is incorrect?

When a piece of copper wire is placed in a colorless solution of silver nitrate, the surface of the wire becomes coated with a shiny silvery material, and the copper begins to form aqueous copper(II) nitrate, which is blue.Which of the following statements regarding this reaction is correct?

In which of the following does chlorine have an oxidation number of +3?

Consider the reaction: Cu(s) + 4HNO3(aq) →\rightarrow→ Cu(NO3)2(aq) + 2NO2(g) + 2OH-(aq) Which species is the reducing agent?

The chemical reactions that occur in voltaic (galvanic) cells are nonspontaneous, and require an outside electrical current to power the reaction.

If two metals are in contact with each other in a moist environment, one of the metals will begin to corrode.

The following reaction occurs in a lead storage battery: PbO2(s) + Pb(s) + H2SO4(aq) ⇌ 2PbSO4(s) + 2H2O(l) Which statement is true?

In which of the following choices is the oxidation number incorrect?

Sodium is produced by electrolysis of molten sodium chloride.What are the products at the anode and cathode, respectively?

Consider the reaction: H2O(l) + 3SO32-(aq) + 2MnO4-(aq) →\rightarrow→ 3SO42-(aq) + 2MnO2(s) + 2OH-(aq) Which species is reduced?

Matter and Energy

Atoms, Ions, and the Periodic Table

Chemical Compounds

Chemical Composition

Chemical Reactions and Equations

Quantities in Chemical Reactions

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The Liquid and Solid States

Solutions

Reaction Rates and Chemical Equilibrium

Acids and Bases

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Consider a voltaic cell that corresponds to the following reaction: Fe(s) + Ni²⁺(aq) $\rightarrow$ Fe²⁺(aq) + Ni(s) Which of the following statements is correct?

Given the following information about the activity series, predict whether the given reaction will occur or not.If it does occur, write a balanced equation.Cu < H₂ < Sn < Fe < Zn < Mg Mg(s) + ZnCl₂(aq) $\rightarrow$

Examine the following reaction: 5FeCl₂(aq) + KMnO₄(aq) + 8HCl(aq) $\rightarrow$ 5FeCl₃(aq) + MnCl₂(aq) + KCl(aq) + 4H₂O(l) Which element has undergone oxidation?

Consider the reaction: Zn(s) + H₂SO₄(aq) $\rightarrow$ ZnSO₄(aq) + H₂(g) Which species is reduced, and how many electrons are transferred per atom of zinc that reacts?

Examine the following reaction: 5FeCl₂(aq) + KMnO₄(aq) + 8HCl(aq) - 5FeCl₃(aq) + MnCl₂(aq) + KCl(aq) + 4H₂O(l) Which element has undergone reduction?

Consider the reaction: H₂O(l) + 3SO₃²^-(aq) + 2MnO₄^-(aq) $\rightarrow$ 3SO₄²^-(aq) + 2MnO₂(s) + 2OH^-(aq) Which species is oxidized?

Given the following information about the activity series, predict whether the given reaction will occur or not.If it does occur, write a balanced equation.Cu < H₂ < Sn < Fe < Zn < Mg Mg(s) + HCl(aq) $\rightarrow$

A lead-acid battery that is used in cars and trucks is powered by the reaction: PbO₂(s) + Pb(s) + 2H₂SO₄(aq) $\rightarrow$ 2PbSO₄(s) + H₂O(l) The substance that is the oxidizing agent in this battery is:

Given the following information about the activity series, predict whether the given reaction will occur or not.If it does occur, write a balanced equation. Cu < H₂ < Sn < Fe < Zn < Mg Cu(s) + SnCl₂(aq) $\rightarrow$

Consider the reaction: Cu(s) + 4HNO₃(aq) $\rightarrow$ Cu(NO₃)₂(aq) + 2NO₂(g) + 2OH^-(aq) Which species is the reducing agent?

The following reaction occurs in a lead storage battery: PbO₂(s) + Pb(s) + H₂SO₄(aq) ⇌ 2PbSO₄(s) + 2H₂O(l) Which statement is true?

Consider the reaction: H₂O(l) + 3SO₃²^-(aq) + 2MnO₄^-(aq) $\rightarrow$ 3SO₄²^-(aq) + 2MnO₂(s) + 2OH^-(aq) Which species is reduced?