Electrochemistry Practice Problems
Example 18.1 Half-Reaction Method of Balancing Aqueous Redox Equations in Acidic Solution For Practice 18.1 Balance the redox reaction in acidic solution:
Chemistry: A Molecular Approach, 3rd Edition Nivaldo J. Tro
© 2014 Pearson Education, Inc.
Example 18.2 Half-Reaction Method of Balancing Aqueous Redox Equations in Acidic Solution For Practice 18.2 Balance the redox reaction in acidic solution:
Chemistry: A Molecular Approach, 3rd Edition Nivaldo J. Tro
© 2014 Pearson Education, Inc.
Example 18.3 Balancing Redox Reactions Occurring in Basic Solution For Practice 18.3 Balance the following redox reaction occurring in basic solution.
Chemistry: A Molecular Approach, 3rd Edition Nivaldo J. Tro
© 2014 Pearson Education, Inc.
Example 18.4 Calculating Standard Potentials for Electrochemical Cells from Standard Electrode Potentials of the Half-Reactions For Practice 18.4 Use tabulated standard electrode potentials to calculate the standard cell potential for the following reaction occurring in an electrochemical cell at 25 °C. (The equation is balanced.).
Chemistry: A Molecular Approach, 3rd Edition Nivaldo J. Tro
© 2014 Pearson Education, Inc.
Example 18.5 Predicting Spontaneous Redox Reactions and Sketching Electrochemical Cells For Practice 18.5 Are the following redox reactions spontaneous under standard conditions? a. b.
Chemistry: A Molecular Approach, 3rd Edition Nivaldo J. Tro
© 2014 Pearson Education, Inc.
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Example 18.6 Relating ΔG and Ecell For Practice 18.6 Use tabulated electrode potentials to calculate G°for the reaction. Is the reaction spontaneous?
Chemistry: A Molecular Approach, 3rd Edition Nivaldo J. Tro
© 2014 Pearson Education, Inc.
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Example 18.7 Relating Ecell and K For Practice 18.7
° °C). Use the tabulated electrode potentials to calculate K for the oxidation of iron by H+ (at 25
Chemistry: A Molecular Approach, 3rd Edition Nivaldo J. Tro
© 2014 Pearson Education, Inc.
Example 18.8 Calculating Ecell under Nonstandard Conditions For Practice 18.8 Determine the cell potential of an electrochemical cell based on the following two half-reactions:
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Chemistry: A Molecular Approach, 3rd Edition Nivaldo J. Tro
© 2014 Pearson Education, Inc.
Example 18.9 Predicting the Products of Electrolysis Reactions For Practice 18.9 Predict the half-reactions occurring at the anode and the cathode for the electrolysis of aqueous Na2SO4.
Chemistry: A Molecular Approach, 3rd Edition Nivaldo J. Tro
© 2014 Pearson Education, Inc.
Example 18.10 Stoichiometry of Electrolysis For Practice 18.10
Silver can be plated out of a solution containing Ag+ according to the half-reaction: How much time (in minutes) would it take to plate 12 g of silver using a current of 3.0 A?
Chemistry: A Molecular Approach, 3rd Edition Nivaldo J. Tro
© 2014 Pearson Education, Inc.
Chemistry: A Molecular Approach, 3rd Edition Nivaldo J. Tro
© 2014 Pearson Education, Inc.
Example 18.2 Half-Reaction Method of Balancing Aqueous Redox Equations in Acidic Solution For Practice 18.2 Balance the redox reaction in acidic solution:
Chemistry: A Molecular Approach, 3rd Edition Nivaldo J. Tro
© 2014 Pearson Education, Inc.
Example 18.3 Balancing Redox Reactions Occurring in Basic Solution For Practice 18.3 Balance the following redox reaction occurring in basic solution.
Chemistry: A Molecular Approach, 3rd Edition Nivaldo J. Tro
© 2014 Pearson Education, Inc.
Example 18.4 Calculating Standard Potentials for Electrochemical Cells from Standard Electrode Potentials of the Half-Reactions For Practice 18.4 Use tabulated standard electrode potentials to calculate the standard cell potential for the following reaction occurring in an electrochemical cell at 25 °C. (The equation is balanced.).
Chemistry: A Molecular Approach, 3rd Edition Nivaldo J. Tro
© 2014 Pearson Education, Inc.
Example 18.5 Predicting Spontaneous Redox Reactions and Sketching Electrochemical Cells For Practice 18.5 Are the following redox reactions spontaneous under standard conditions? a. b.
Chemistry: A Molecular Approach, 3rd Edition Nivaldo J. Tro
© 2014 Pearson Education, Inc.
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°
Example 18.6 Relating ΔG and Ecell For Practice 18.6 Use tabulated electrode potentials to calculate G°for the reaction. Is the reaction spontaneous?
Chemistry: A Molecular Approach, 3rd Edition Nivaldo J. Tro
© 2014 Pearson Education, Inc.
°
Example 18.7 Relating Ecell and K For Practice 18.7
° °C). Use the tabulated electrode potentials to calculate K for the oxidation of iron by H+ (at 25
Chemistry: A Molecular Approach, 3rd Edition Nivaldo J. Tro
© 2014 Pearson Education, Inc.
Example 18.8 Calculating Ecell under Nonstandard Conditions For Practice 18.8 Determine the cell potential of an electrochemical cell based on the following two half-reactions:
°
Chemistry: A Molecular Approach, 3rd Edition Nivaldo J. Tro
© 2014 Pearson Education, Inc.
Example 18.9 Predicting the Products of Electrolysis Reactions For Practice 18.9 Predict the half-reactions occurring at the anode and the cathode for the electrolysis of aqueous Na2SO4.
Chemistry: A Molecular Approach, 3rd Edition Nivaldo J. Tro
© 2014 Pearson Education, Inc.
Example 18.10 Stoichiometry of Electrolysis For Practice 18.10
Silver can be plated out of a solution containing Ag+ according to the half-reaction: How much time (in minutes) would it take to plate 12 g of silver using a current of 3.0 A?
Chemistry: A Molecular Approach, 3rd Edition Nivaldo J. Tro
© 2014 Pearson Education, Inc.
