Basic Chemistry
6th Edition
ISBN: 9780134878119
Author: Timberlake, Karen C. , William
Publisher: Pearson,
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Question
Chapter 15, Problem 77CP
Interpretation Introduction
Interpretation: Use half equations to balance the following equations in acidic solutions:
Concept introduction:Here are the steps to
- Determine the oxidation numbers of the elements to figure out the oxidation and reduction half of the equation.
- To balance every half reaction in acidic medium, use H2O to balance O, use H+ to balance H, and finally use electrons to balance the net charge.
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Consider the unbalanced reaction below occurring in acidic solution:
PbO₂ (s) + (aq)
Pb2+ (aq) + 1₂(5)
Which of the following reactions is the properly balanced net redox reaction?
O PbO₂(s) + 21-(aq) + 4H*(aq)
O PbO₂(s) +41-(aq) + 4H*(aq)
O PbO₂(s) +1-(aq) + 2H*(aq) -
O PbO₂(s) + 21-(aq)
-
1
Pb2+ (aq) + 12(s) + 2H₂O()
Pb2+ (aq) +212(s) + 2H₂O()
Pb2+ (aq) + 1₂(s) + H₂O()
Pb2+ (aq) + 1₂(s) + O₂(g)
Complete and balance the following redox reaction in basic solution
Zn(s) + 4 OH (aq) Zn(OH), +2 e
04-
02
04+
1
4.
6.
8
9.
02
(s)
(1)
(g) (aq)
H*
H30*
e
Zn
H
H20
OH
Reset
• z H20
Delete
7.
LO
3.
question 9
Fill in the blanks:
(7.14) In the electrolysis of CUSO4, how
much copper is plated out on the cathode by
a current of a 0.75A in 10 minutes?
(Cu 63.546 g/mol)
Analysis/Strategy: ampere & time
coulombs ® mol e¯ (or Faraday) ® mol
Cu
(R
mass of Cu
Reduction half-reaction of copper
solution to copper metal: Cu*²(aq)
+
e¯ ® Cu(s)
copper solution, CUSO4, has the ions:
[Cu*2 SOq]
Answer: The mass of copper plated out is
g Cu. (3 sig fig)
Chapter 15 Solutions
Basic Chemistry
Ch. 15.1 - Identify each of the following as an oxidation or...Ch. 15.1 - Identify each of the following as an oxidation or...Ch. 15.1 - Prob. 3PPCh. 15.1 - Prob. 4PPCh. 15.1 - Prob. 5PPCh. 15.1 - Prob. 6PPCh. 15.1 - Prob. 7PPCh. 15.1 - Prob. 8PPCh. 15.1 - Prob. 9PPCh. 15.1 - Prob. 10PP
Ch. 15.1 - Prob. 11PPCh. 15.1 - Prob. 12PPCh. 15.1 - What is the oxidation number of the specified...Ch. 15.1 - What is the oxidation number of the specified...Ch. 15.1 - Prob. 15PPCh. 15.1 - Prob. 16PPCh. 15.1 - Prob. 17PPCh. 15.1 - Prob. 18PPCh. 15.1 - Prob. 19PPCh. 15.1 - Prob. 20PPCh. 15.2 - Balance each of the following half-reactions in...Ch. 15.2 - Prob. 22PPCh. 15.2 - Prob. 23PPCh. 15.2 - Use the half-reaction method to balance each of...Ch. 15.2 - Use the half-reaction method to balance each of...Ch. 15.2 - Use the half-reaction method to balance each of...Ch. 15.3 - Use the activity series in Table 15.3 to predict...Ch. 15.3 - Use the activity series in Table 15.3 to predict...Ch. 15.3 - Prob. 29PPCh. 15.3 - Prob. 30PPCh. 15.3 - Prob. 31PPCh. 15.3 - Prob. 32PPCh. 15.3 - The following half-reaction takes place in a...Ch. 15.3 - The following half-reaction takes place in a...Ch. 15.3 - The following half-reaction takes place in a...Ch. 15.3 - Prob. 36PPCh. 15.4 - What we call "tin cans" are really iron cans...Ch. 15.4 - Prob. 38PPCh. 15.4 - Prob. 39PPCh. 15.4 - Prob. 40PPCh. 15.4 - Prob. 41PPCh. 15.4 - Prob. 42PPCh. 15 - Prob. 43UTCCh. 15 - Prob. 44UTCCh. 15 - Prob. 45UTCCh. 15 - Prob. 46UTCCh. 15 - The chapter sections to review are shown in...Ch. 15 - The chapter sections to review are shown in...Ch. 15 - The chapter sections to review are shown in...Ch. 15 - Prob. 50UTCCh. 15 - Prob. 51UTCCh. 15 - Prob. 52UTCCh. 15 - The chapter sections to review are shown in...Ch. 15 - The chapter sections to review are shown in...Ch. 15 - Which of the following are oxidation-reduction...Ch. 15 - Which of the following are oxidation-reduction...Ch. 15 - In the mitochondria of human cells, energy is...Ch. 15 - Prob. 58APPCh. 15 - Prob. 59APPCh. 15 - Prob. 60APPCh. 15 - Prob. 61APPCh. 15 - Prob. 62APPCh. 15 - Prob. 63APPCh. 15 - Write the balanced half-reactions and a balanced...Ch. 15 - Prob. 65APPCh. 15 - Use the activity series in Table 15.3 to predict...Ch. 15 - Prob. 67APPCh. 15 - Prob. 68APPCh. 15 - Prob. 69APPCh. 15 - Prob. 70APPCh. 15 - Prob. 71APPCh. 15 - In an acidic dry-cell battery, the following...Ch. 15 - Steel bolts made for sailboats are coated with...Ch. 15 - Copper cooking pans are stainless steel pans...Ch. 15 - Prob. 75CPCh. 15 - Prob. 76CPCh. 15 - Prob. 77CPCh. 15 - The following problems are related to the topics...Ch. 15 - The following problems are related to the topics...Ch. 15 - The following problems are related to the topics...Ch. 15 - Prob. 81CPCh. 15 - Prob. 82CPCh. 15 - Prob. 83CPCh. 15 - Prob. 84CPCh. 15 - Prob. 85CPCh. 15 - Prob. 86CPCh. 15 - Prob. 87CPCh. 15 - Prob. 88CP
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