AlF 6 3– + 3 e – → Al + 6 F – 1 Which of the following occurs in the reaction?

AlF 6 3– is reduced at the cathode.

Aluminum is converted from the –3 oxidation state to the 0 oxidation state.

A redox reaction has an equilibrium constant of K = 2.6 x 10 5 . Which of the following statements best represents the algebraic signs of E o cell and G o rxn for this reaction?

E o cell is positive and G o rxn is negative.

E o cell is positive and G o rxn is positive.

E o cell is negative and G o rxn is negative.

E o cell is negative and G o rxn is positive.

Which of the following statements applies to the change in mass of the electrodes involved in this electrochemical cell?

Electrode A is the cathode and it gains mass since metal ions are being converted to metal atoms which often adhere to the electrode.

Electrode A is the anode and it gains mass since metal ions are being converted to metal atoms which often adhere to the electrode.

Electrode B is the anode and it gains mass since metal ions are being converted to metal atoms which often adhere to the electrode.

Electrode B is the cathode and it gains mass since metal ions are being converted to metal atoms which often adhere to the electrode.

Which of the following best describes the function of the portion of the electrochemical cell labeled B?

Structure B provides soluble anions that migrate to the anode as well as soluble cations that migrate to the cathode, thus maintaining a balance of charge in the galvanic cell.

Structure B functions to complete the electrical circuit present in the electrolytic cell.

Structure B provides soluble anions that migrate to the anode as well as soluble cations that migrate to the cathode, thus maintaining a balance of charge in the electrolytic cell.

Structure B provides soluble anions that migrate to the cathode as well as soluble cations that migrate to the anode, thus maintaining a charge balance in the galvanic cell.

A student wishes to construct a thermodynamically favorable galvanic cell using electrodes made of chromium and silver. Each half cell will consist of the electrode partially submerged in a 1.0 M solutions of its nitrate salt. The two electrodes will be connected by separate wires to a voltmeter and the two half-cells will be connected with a salt bridge. The student constructs another galvanic cell still using silver and chromium electrodes, but substitutes a 0.50 M solution of silver nitrate for the 1.0 M solution of silver nitrate in the silver half-cell. Which of the following best describes the effect this substitution has on the initial reading on the voltmeter?

The voltage will decrease due to fewer reactants being present.

The voltage will increase in both cells.

The voltage will decrease in both cells.

The voltage will increase due to fewer reactants being present.

An experiment was conducted in which two test tubes were filled with water at 25C and 1 atm pressure. Each test tube was subsequently inverted into a beaker containing water which was then acidified. Which of the following best describes the reaction taking place in Test Tube A?

E o cell is negative, G o is positive

E o cell is positive, G o is positive

E o cell is positive, G o is negative

E o cell is negative, G o is negative

An experiment was conducted in which two test tubes were filled with water at 25C and 1 atm pressure. Each test tube was subsequently inverted into a beaker containing water which was then acidified. Which of the following best represents the half-reaction occurring at the anode?

2 H 2 O(l) → O 2 (g) + 4 H + (aq) + 4 e –

2 H 2 O(l) → 2 H 2 (g) + O 2 (g)

2 H 2 O(l) + 2 e – → H 2 (g) + 2 OH – (aq)

Which of the following occurs if a 50-milliliter sample of a 2-molar Cd(NO 3 ) 2 solution is added to the left beaker?

Voltage becomes zero and remains at zero.

Which is the net ionic equation for the nitric acid oxidation of iron(II) chloride to form iron(III) chloride and nitrogen(II) oxide?

3 Fe 2+ + NO 3 - + 4 H + --> 3 Fe 3+ + NO + 2 H 2 O

3 FeCl 2 + 4 HNO 3 --> 2 FeCl 3 + Fe(NO 3 ) 3 + N + 2 H 2 O

3 Fe 2+ + 6 Cl + 4 NO 3 - + 4 H + --> 3 Fe 3+ + 6Cl + 3NO 3 - + NO + 2 H 2 O

3 Fe 2+ + NO 3 - + 6 H + --> 3 Fe 3+ + N 2+ + 3 H 2 O

Cu( s ) + 2 Ag + ( aq ) --> Cu 2+ ( aq ) + 2 Ag( s ) E° = +0.460 V The E° value of the cell based on the reaction above is +0.460 V under standard conditions. An increase in which of the following would produce a higher voltage?

concentration of the Ag + ( aq ) solution

volume of the Cu 2+ ( aq ) solution

Cu( s ) + 2 Ag + ( aq ) --> Cu 2+ ( aq ) + 2 Ag( s ) E° = +0.460 V Which process occcrs in the cathode compartment of this cell?

Ag + ( aq ) ions move toward the electrode

Ag + ( aq ) ions move away from the electrode

Cu 2+ ( aq ) ions move toward the electrode

Cu 2+ ( aq ) ions move away from the electrode

AP Chemistry Electrochemistry

Quiz

•

Chemistry

•

9th - 12th Grade

•

Practice Problem

•

Hard

•

NGSS

HS-PS1-7, HS-PS1-2, HS-PS3-1

+8

Standards-aligned

Charles Martinez

Used 1+ times

FREE Resource

30 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

This electrode in a voltaic cell loses mass

Anode

Cathode

2.

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

In a voltaic cell, the half cell that receives anions from the salt bridge is

Cathode

Anode

3.

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

In a voltaic cell, the half cell that receives cations from the salt bridge is

Cathode

Anode

4.

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

In the reactions
Sn⁺² + 2Fe⁺³ --> Sn⁺⁴ + 2Fe⁺²,
the reducing agent is

Fe⁺³

Sn⁺²

Sn⁺⁴

Fe⁺²

What is the equation and cell potential?

2Al³⁺ + 3Ni → 2Al + 3Ni²⁺ E^O = 1.89 V

2Al + 3Ni²⁺ → 2Al³⁺ + 3Ni E^O = 1.89 V

2Al³⁺ + 3Ni → 2Al + 3Ni²⁺ E^O = 1.43 V

2Al + 3Ni²⁺ → 2Al³⁺ + 3Ni E^O = 1.43 V

Calculate the cell potential of voltaic cell

–1.51

- 0.03

+0.03

+1.51

7.

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

What is E^o for the following reaction?

+0.85

+0.51

–1.53

–1.87

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30 questions

This electrode in a voltaic cell loses mass

In a voltaic cell, the half cell that receives anions from the salt bridge is

In a voltaic cell, the half cell that receives cations from the salt bridge is

In the reactions
Sn⁺² + 2Fe⁺³ --> Sn⁺⁴ + 2Fe⁺²,
the reducing agent is

What is the equation and cell potential?

Calculate the cell potential of voltaic cell

What is E^o for the following reaction?

What is cell potential?

AlF₆ ^3– + 3 e^– → Al + 6 F^{– 1}
A steady current of 10. amperes is passed though an aluminum-production cell for 15 minutes. Which of the following is the correct number of grams of aluminum produced?

AlF₆ ^3– + 3 e^– → Al + 6 F^{– 1}

Which of the following occurs in the reaction?

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Popular Resources on Wayground

Discover more resources for Chemistry

AP Chemistry Electrochemistry

30 questions

This electrode in a voltaic cell loses mass

In a voltaic cell, the half cell that receives anions from the salt bridge is

In a voltaic cell, the half cell that receives cations from the salt bridge is

In the reactionsSn+2 + 2Fe+3 --> Sn+4 + 2Fe+2,the reducing agent is

What is the equation and cell potential?

Calculate the cell potential of voltaic cell

What is Eo for the following reaction?

What is cell potential?

AlF6 3– + 3 e– → Al + 6 F– 1A steady current of 10. amperes is passed though an aluminum-production cell for 15 minutes. Which of the following is the correct number of grams of aluminum produced?

AlF6 3– + 3 e– → Al + 6 F– 1Which of the following occurs in the reaction?

Create a free account and access millions of resources

Similar Resources on Wayground

Popular Resources on Wayground

Discover more resources for Chemistry

In the reactions
Sn⁺² + 2Fe⁺³ --> Sn⁺⁴ + 2Fe⁺²,
the reducing agent is

What is E^o for the following reaction?

AlF₆ ^3– + 3 e^– → Al + 6 F^{– 1}
A steady current of 10. amperes is passed though an aluminum-production cell for 15 minutes. Which of the following is the correct number of grams of aluminum produced?

AlF₆ ^3– + 3 e^– → Al + 6 F^{– 1}

Which of the following occurs in the reaction?