Basic Chemistry
6th Edition
ISBN: 9780134878119
Author: Timberlake, Karen C. , William
Publisher: Pearson,
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Chapter 15, Problem 58APP
Interpretation Introduction
Interpretation: To analyze if the elemental chlorine is oxidized or reduced during water chlorination.
Concept introduction: Water chlorination is defined as the process in which chlorine or chlorine compounds are added to water in order to kill certain germs and bacteria which are present in water as these all are highly toxic for the content of water. When chlorine is dissolved in water, it gets converted to hypochlorous acid and Chlorine. The reaction is represented below as:
A reduction reaction is the one in which a species gains electron which results in decrease in oxidation state of that chemical species. On the other hand an oxidation reaction is the one in which loss of electron by a chemical species takes place which results in increase in oxidation state of the atom undergoing oxidation.
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This is possible because of the following reactions that take place rapidly as long as reactants are available:
(11.3)
Equation : 51-(aq) + IO-3(aq) + 6H+(aq) ----> 3I2(aq) +3H2O(I)
(7.12) A technician plates a faucet with 0.86
g Cr metal by electrolysis of aqueous
Cr2(SO4)3. If 12.5 min is allowed for the
plating, what current is needed?
Molar mass of Cr: 51.996 g/mol
Analysis/Strategy: mass of Cr ® mol Cr
mol e¯ (or Faraday) ® coulombs ®
amperes
Reduction half-reaction of chromium
solution to chromium metal: Cr*
,+3,
(aq)
e¯ ® Cr(s)
+
chromium solution, Cr2(SO4)3, has the
ions: [Cr*3 s04-²]
Answer: The current needed is
ampere. (2 sig fig)
15.
5. For the following combustion reactions, identify the species that is oxidized, the species that is
reduced, the oxidizing agent, and the reducing agent. [5.49]
a. 2 C₂H₂ + 5 O₂ - 4 CO₂ + 2 H₂O
b. 2 C.Ho+13 O; → 8 CO, + 10 HẸO
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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