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Chapter 19, Problem 1SAQ
Interpretation Introduction

Interpretation: The correct coefficients for each reactant and product are to be chosen for the following reaction from the given options:

_VO2+(aq)+__Sn(s)+__H +(aq) __VO2+(aq)+__Sn2+(aq)+__H2O(l)

a) 2, 1, 4 → 2, 1, 2

b) 1, 1, 2 → 1, 1, 1

c) 2, 1, 2 → 2, 1, 1

d) 2, 1, 2 → 2, 1, 2

Expert Solution & Answer
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Answer to Problem 1SAQ

Solution:

To solve this problem, begin by assigning oxidation states to all atoms and identify the substances being oxidized and reduced.

Explanation of Solution

The equation for this reaction as follows:

VO2+(aq)+Sn(s)+H+(aq)VO2+(aq)+Sn2+(aq)+H2O(l)

Chemistry: A Molecular Approach, Books a la Carte Edition; Modified MasteringChemistry with Pearson eText -- ValuePack Access Card -- for Chemistry: A Molecular Approach, 4/e, Chapter 19, Problem 1SAQ

Separate the overall reaction into two half-reactions: one for oxidation and other for reduction.

Oxidation:Sn(s)Sn2+(aq)Reduction:VO2+(aq)VO2+(aq)

Balance each half-reaction; balance O by adding H2O and balance H by adding H+.

Sn(s)Sn2+(aq)VO2+(aq)VO2+(aq)+H2O(l)2H+(aq)+VO2+(aq)VO2+(aq)+H2O(l)

Balance each-half reaction with respect to charge by adding electrons. Make the sum of the charges on both sides of the equation equal by adding as many electrons as necessary.

Sn(s)Sn2+(aq)+2e2H+(aq)+VO2+(aq)+eVO2+(aq)+H2O(l)

Make the number of electrons in both-half reactions equal by multiplying one or both half-reactions by a small whole number.

Sn(s)Sn2+(aq)+2e2[2H+(aq)+VO2+(aq)+eVO2+(aq)+H2O(l)]4H+(aq)+2VO2+(aq)+2e2VO2+(aq)+2H2O(l)

Add the two half-reaction together, cancelling electrons and other species as necessary.

Sn(s)Sn2+(aq)+2e4H+(aq)+2VO2+(aq)+2eVO2+(aq)+2H2O(l)2VO2+(aq)+Sn(s)+4H+(aq)2VO2+(aq)+Sn2+(aq)+2H2O(l)

Conclusion:

Thus, the coefficient of each reactant and product will be 2,1,42,1,2 and the correct answer will be option (a).

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Chapter 19 Solutions

Chemistry: A Molecular Approach, Books a la Carte Edition; Modified MasteringChemistry with Pearson eText -- ValuePack Access Card -- for Chemistry: A Molecular Approach, 4/e

Ch. 19 - Prob. 11SAQCh. 19 - Prob. 12SAQCh. 19 - Prob. 13SAQCh. 19 - Prob. 14SAQCh. 19 - Q15. Which metal can be used as a sacrificial...Ch. 19 - 1. In electrochemistry, spontaneous redox...Ch. 19 - Prob. 2ECh. 19 - Prob. 3ECh. 19 - Prob. 4ECh. 19 - Prob. 5ECh. 19 - Prob. 6ECh. 19 - Prob. 7ECh. 19 - Prob. 8ECh. 19 - Prob. 9ECh. 19 - Prob. 10ECh. 19 - Prob. 11ECh. 19 - Prob. 12ECh. 19 - Prob. 13ECh. 19 - Prob. 14ECh. 19 - 15. Is a spontaneous redox reaction obtained by...Ch. 19 - 16. How can Table 19.1 be used to predict whether...Ch. 19 - 17. Explain why , , and K are all interrelated. Ch. 19 - Prob. 18ECh. 19 - Prob. 19ECh. 19 - Prob. 20ECh. 19 - Prob. 21ECh. 19 - Prob. 22ECh. 19 - 23. What are the anode and cathode reactions in a...Ch. 19 - Prob. 24ECh. 19 - 25. What is a fuel cell? What is the most common...Ch. 19 - Prob. 26ECh. 19 - 27. List some applications of electrolysis. Ch. 19 - Prob. 28ECh. 19 - 29. What species is oxidized, and what species is...Ch. 19 - Prob. 30ECh. 19 - Prob. 31ECh. 19 - Prob. 32ECh. 19 - Prob. 33ECh. 19 - Prob. 34ECh. 19 - Prob. 35ECh. 19 - Prob. 36ECh. 19 - Balance each redox reaction occurring in acidic...Ch. 19 - 38. Balance each redox reaction occurring in...Ch. 19 - 39. Balance each redox reaction occurring in...Ch. 19 - 40. Balance each redox reaction occurring in...Ch. 19 - 41. Balance each redox reaction occurring in basic...Ch. 19 - Prob. 42ECh. 19 - 43. Sketch a voltaic cell for each redox reaction....Ch. 19 - 44. Sketch a voltaic cell for each redox reaction....Ch. 19 - Prob. 45ECh. 19 - Prob. 46ECh. 19 - 47. Consider the voltaic cell: a. Determine the...Ch. 19 - 48. Consider the voltaic cell: a. Determine the...Ch. 19 - 49. Use line notation to represent each...Ch. 19 - 50. Use line notation to represent each...Ch. 19 - Prob. 51ECh. 19 - Prob. 52ECh. 19 - 53. Determine whether or not each redox reaction...Ch. 19 - 54. Determine whether or not each redox reaction...Ch. 19 - 55. Which metal could you use to reduce Mn2+ ions...Ch. 19 - Prob. 56ECh. 19 - Prob. 57ECh. 19 - Prob. 58ECh. 19 - Prob. 59ECh. 19 - Prob. 60ECh. 19 - Prob. 61ECh. 19 - 62. Calculate for each balanced redox reaction...Ch. 19 - Prob. 63ECh. 19 - 64. Which metal is the best reducing agent? a....Ch. 19 - 65. Use tabulated electrode potentials to...Ch. 19 - Prob. 66ECh. 19 - 67. Calculate the equilibrium constant for each of...Ch. 19 - 68. Calculate the equilibrium constant for each of...Ch. 19 - Prob. 69ECh. 19 - Prob. 70ECh. 19 - Prob. 71ECh. 19 - Prob. 72ECh. 19 - 73. A voltaic cell employs the following redox...Ch. 19 - 74. A voltaic cell employs the redox reaction: 2...Ch. 19 - 75. An electrochemical cell is based on these two...Ch. 19 - Prob. 76ECh. 19 - 77. A voltaic cell consists of a Zn/Zn2+ half-cell...Ch. 19 - 78. A voltaic cell consists of a Pb/Pb2+ half-cell...Ch. 19 - Prob. 79ECh. 19 - Prob. 80ECh. 19 - 81. A concentration cell consists of two Sn/Sn2+...Ch. 19 - Prob. 82ECh. 19 - 83. Determine the optimum mass ratio of Zn to MnO2...Ch. 19 - 84. What mass of lead sulfate is formed in a...Ch. 19 - 85. Refer to the tabulated values of in Appendix...Ch. 19 - Prob. 86ECh. 19 - Prob. 87ECh. 19 - Prob. 88ECh. 19 - Prob. 89ECh. 19 - Prob. 90ECh. 19 - 91. Write equations for the half-reactions that...Ch. 19 - Prob. 92ECh. 19 - 93. Write equations for the half-reactions that...Ch. 19 - 94. What products are obtained in the electrolysis...Ch. 19 - 95. Write equations for the half-reactions that...Ch. 19 - Prob. 96ECh. 19 - 97. Make a sketch of an electrolysis cell that...Ch. 19 - Prob. 98ECh. 19 - Prob. 99ECh. 19 - Prob. 100ECh. 19 - Prob. 101ECh. 19 - Prob. 102ECh. 19 - Prob. 103ECh. 19 - Prob. 104ECh. 19 - Prob. 105ECh. 19 - Prob. 106ECh. 19 - 107. Consider the molecular views of an Al strip...Ch. 19 - Prob. 108ECh. 19 - Prob. 109ECh. 19 - Prob. 110ECh. 19 - Prob. 111ECh. 19 - Prob. 112ECh. 19 - Prob. 113ECh. 19 - Prob. 114ECh. 19 - Prob. 115ECh. 19 - Prob. 116ECh. 19 - Prob. 117ECh. 19 - Prob. 118ECh. 19 - 119. The Ksp of CuI is 1.1 × 10–12. Find Ecell for...Ch. 19 - 120. The Ksp of Zn(OH)2 is 1.8 × 10–14. Find Ecell...Ch. 19 - 121. Calculate and K for each reaction. a. The...Ch. 19 - Prob. 122ECh. 19 - Prob. 123ECh. 19 - Prob. 124ECh. 19 - Prob. 125ECh. 19 - Prob. 126ECh. 19 - Prob. 127ECh. 19 - Prob. 128ECh. 19 - Prob. 129ECh. 19 - 130. To what pH should you adjust a standard...Ch. 19 - 131. Suppose a hydrogen–oxygen fuel-cell generator...Ch. 19 - 132. A voltaic cell designed to measure [Cu2+] is...Ch. 19 - 133. The surface area of an object to be gold...Ch. 19 - Prob. 134ECh. 19 - Prob. 135ECh. 19 - Prob. 136ECh. 19 - Prob. 137ECh. 19 - Prob. 138ECh. 19 - Prob. 139ECh. 19 - 140. A redox reaction employed in an...Ch. 19 - 141. A redox reaction has an equilibrium constant...Ch. 19 - Prob. 142QGWCh. 19 - Prob. 143DIACh. 19 - Prob. 144DIACh. 19 - 145. Design a device that uses an electrochemical...Ch. 19 - Prob. 146DIACh. 19 - Prob. 147DIA
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