The figure shows a molecular-level representation of the following voltaic cell: Mg(s)+ Sn2+(aq)→ Mg2+(aq)+ Sn(s)When drawing the "after" representation one would note that

A) the tin electrode will be smaller. B) the magnesium electrode will be larger. C) the number of Mg2+ ions in solution will remain constant. D) deposits will form in the salt bridge. E) the number of Sn2+ ions in solution will decrease. A) the tin electrode will be smaller. B) the magnesium electrode will be larger. C) the number of Mg2+ ions in solution will remain constant. D) deposits will form in the salt bridge. E) the number of Sn2+ ions in solution will decrease.

The figure shows the electrolysis of molten AlCl3. What reaction occurs at the anode of this cell?

A) AlCl3(l)→ AlCl2(l) B) Cl-(l)+ e- → Cl2- C) Al3+(l)+ 3e- → Al(l) D) 2Cl-(l)+ 2e- → Cl2(g) E) 2Cl-(l)→ Cl2(g)+ 2e- A) AlCl3(l)→ AlCl2(l) B) Cl-(l)+ e- → Cl2- C) Al3+(l)+ 3e- → Al(l) D) 2Cl-(l)+ 2e- → Cl2(g) E) 2Cl-(l)→ Cl2(g)+ 2e-

Consider the reaction: N2(g)+ 3H2(g)→ 2NH3(g)Which of the following statements is correct?

A) Nitrogen is oxidized. B) Hydrogen is reduced. C) Nitrogen is the reducing agent. D) The reaction is not an oxidation-reduction reaction. E) Hydrogen is the reducing agent. A) Nitrogen is oxidized. B) Hydrogen is reduced. C) Nitrogen is the reducing agent. D) The reaction is not an oxidation-reduction reaction. E) Hydrogen is the reducing agent.

Consider a voltaic cell that corresponds to the following reaction: Zn(s)+ Cu2+(aq)→ Zn2+(aq)+ Cu(s)Which of the following statements is correct?

A) Zinc is the oxidizing agent. B) The Cu2+ solution must be in the half-cell with the zinc electrode. C) No salt bridge is necessary, since the charge is 2+ on both sides of the equation. D) The zinc electrode is the cathode. E) Two electrons will be transferred in this reaction per atom of zinc that reacts. A) Zinc is the oxidizing agent. B) The Cu2+ solution must be in the half-cell with the zinc electrode. C) No salt bridge is necessary, since the charge is 2+ on both sides of the equation. D) The zinc electrode is the cathode. E) Two electrons will be transferred in this reaction per atom of zinc that reacts.

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: Ca(s)+ 2H2O(l)→ Ca(OH)2(aq)+ H2(g)Which of the following statements is correct?

A) Calcium is reduced. B) Hydrogen is oxidized. C) Oxygen is oxidized. D) Oxygen is the reducing agent. E) Calcium is oxidized. A) Calcium is reduced. B) Hydrogen is oxidized. C) Oxygen is oxidized. D) Oxygen is the reducing agent. E) Calcium is oxidized.

The change, Br2 + H2O → HOBr + HBr, is

A) oxidation only. B) reduction only. C) both oxidation and reduction. D) neither oxidation nor reduction. E) an acid-base reaction. A) oxidation only. B) reduction only. C) both oxidation and reduction. D) neither oxidation nor reduction. E) an acid-base reaction.

Exam 14: Oxidation-Reduction Reactions

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 Fe(s)+ SnCl₂(aq)→

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(Multiple Choice)

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Question 1

Correct Answer:

Verified

The potential of a voltaic cell is greatest in cells constructed of strong oxidizing and reducing agents.

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(True/False)

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Question 2

Correct Answer:

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True

Equations that are written to represent either an oxidation reaction or a reduction reaction are called half-reactions.

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(True/False)

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Question 3

Correct Answer:

Verified

True

Consider the following oxidation-reduction reaction: 2Fe³⁺(aq)+ 2Hg(l)+ 2Cl⁻(aq)→ 2Fe²⁺(aq)+ Hg₂Cl₂(s)Which one of the following pairs correctly indicates the oxidizing agent and the reducing agent in this reaction? Oxidizing agent Reducing agent

(Multiple Choice)

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Question 4

(Multiple Choice)

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Question 17

The figure shows the electrolysis of molten NaI. What reaction occurs at the cathode of this cell?

(Multiple Choice)

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Question 18

In a fuel cell that uses gaseous hydrogen and oxygen as reactants, which one of the following reactions is occurring at the anode?

(Multiple Choice)

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Question 19

In any electrolytic cell, the cathode is the electrode

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Question 20

Showing 1 - 20 of 120

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 Fe(s)+ SnCl₂(aq)→

The potential of a voltaic cell is greatest in cells constructed of strong oxidizing and reducing agents.

Equations that are written to represent either an oxidation reaction or a reduction reaction are called half-reactions.

Consider the following oxidation-reduction reaction: 2Fe³⁺(aq)+ 2Hg(l)+ 2Cl⁻(aq)→ 2Fe²⁺(aq)+ Hg₂Cl₂(s)Which one of the following pairs correctly indicates the oxidizing agent and the reducing agent in this reaction? Oxidizing agent Reducing agent

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)→

The figure shows a molecular-level representation of the following voltaic cell: Mg(s)+ Sn²⁺(aq)→ Mg²⁺(aq)+ Sn(s)When drawing the "after" representation one would note that

The figure shows the electrolysis of molten AlCl₃. What reaction occurs at the anode of this cell?

Consider the reaction: N₂(g)+ 3H₂(g)→ 2NH₃(g)Which of the following statements is correct?

Consider a voltaic cell that corresponds to the following reaction: Zn(s)+ Cu²⁺(aq)→ Zn²⁺(aq)+ Cu(s)Which of the following statements is correct?

In which compound does phosphorus have an oxidation number of 3+?

An electrolytic cell is an electrochemical cell in which an oxidation-reduction reaction causes electrons to flow through an external circuit.

A mercury button battery that is used in watches and calculators is powered by the following reaction: Zn(s)+ HgO(s)→ ZnO(s)+ Hg(s)The substance that is oxidized 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 Mg(s)+ HCl(aq)→

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: Ca(s)+ 2H₂O(l)→ Ca(OH)₂(aq)+ H₂(g)Which of the following statements is correct?

The change, Br₂ + H₂O → HOBr + HBr, is

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

The figure shows the electrolysis of molten NaI. What reaction occurs at the cathode of this cell?

In a fuel cell that uses gaseous hydrogen and oxygen as reactants, which one of the following reactions is occurring at the anode?

In any electrolytic cell, the cathode is the electrode

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Exam 14: Oxidation-Reduction Reactions

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 Fe(s)+ SnCl2(aq)→

The potential of a voltaic cell is greatest in cells constructed of strong oxidizing and reducing agents.

Equations that are written to represent either an oxidation reaction or a reduction reaction are called half-reactions.

Consider the following oxidation-reduction reaction: 2Fe3+(aq)+ 2Hg(l)+ 2Cl−(aq)→ 2Fe2+(aq)+ Hg2Cl2(s)Which one of the following pairs correctly indicates the oxidizing agent and the reducing agent in this reaction? Oxidizing agent Reducing agent

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)→

The figure shows a molecular-level representation of the following voltaic cell: Mg(s)+ Sn2+(aq)→ Mg2+(aq)+ Sn(s)When drawing the "after" representation one would note that

The figure shows the electrolysis of molten AlCl3. What reaction occurs at the anode of this cell?

Consider the reaction: N2(g)+ 3H2(g)→ 2NH3(g)Which of the following statements is correct?

Consider a voltaic cell that corresponds to the following reaction: Zn(s)+ Cu2+(aq)→ Zn2+(aq)+ Cu(s)Which of the following statements is correct?

In which compound does phosphorus have an oxidation number of 3+?

An electrolytic cell is an electrochemical cell in which an oxidation-reduction reaction causes electrons to flow through an external circuit.

A mercury button battery that is used in watches and calculators is powered by the following reaction: Zn(s)+ HgO(s)→ ZnO(s)+ Hg(s)The substance that is oxidized 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 Mg(s)+ HCl(aq)→

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: Ca(s)+ 2H2O(l)→ Ca(OH)2(aq)+ H2(g)Which of the following statements is correct?

The change, Br2 + H2O → HOBr + HBr, is

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

The figure shows the electrolysis of molten NaI. What reaction occurs at the cathode of this cell?

In a fuel cell that uses gaseous hydrogen and oxygen as reactants, which one of the following reactions is occurring at the anode?

In any electrolytic cell, the cathode is the electrode

Matter and Energy

Atoms, Ions, and the Periodic Table

Chemical Compounds

Chemical Composition

Chemical Reactions and Equations

Quantities in Chemical Reactions

Electron Structure of the Atom

Chemical Bonding

The Gaseous State

The Liquid and Solid States

Solutions

Reaction Rates and Chemical Equilibrium

Acids and Bases

Nuclear Chemistry

Organic Chemistry

Biochemistry

Filters

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 Fe(s)+ SnCl₂(aq)→

Consider the following oxidation-reduction reaction: 2Fe³⁺(aq)+ 2Hg(l)+ 2Cl⁻(aq)→ 2Fe²⁺(aq)+ Hg₂Cl₂(s)Which one of the following pairs correctly indicates the oxidizing agent and the reducing agent in this reaction? Oxidizing agent Reducing agent

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)→

The figure shows a molecular-level representation of the following voltaic cell: Mg(s)+ Sn²⁺(aq)→ Mg²⁺(aq)+ Sn(s)When drawing the "after" representation one would note that

The figure shows the electrolysis of molten AlCl₃. What reaction occurs at the anode of this cell?

Consider the reaction: N₂(g)+ 3H₂(g)→ 2NH₃(g)Which of the following statements is correct?

Consider a voltaic cell that corresponds to the following reaction: Zn(s)+ Cu²⁺(aq)→ Zn²⁺(aq)+ Cu(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)+ HCl(aq)→

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: Ca(s)+ 2H₂O(l)→ Ca(OH)₂(aq)+ H₂(g)Which of the following statements is correct?

The change, Br₂ + H₂O → HOBr + HBr, is

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